CN211925718U - Power plant boiler coupling biomass boiler system - Google Patents
Power plant boiler coupling biomass boiler system Download PDFInfo
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- CN211925718U CN211925718U CN201922212240.9U CN201922212240U CN211925718U CN 211925718 U CN211925718 U CN 211925718U CN 201922212240 U CN201922212240 U CN 201922212240U CN 211925718 U CN211925718 U CN 211925718U
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Abstract
The utility model discloses a power plant boiler coupling biomass boiler system, including biomass boiler, power plant boiler and steam turbine, biomass boiler burns the steam that produces and replaces the coal-fired steam that produces of some power plant boiler, and steam gets into the steam turbine and does work or generate electricity. Different access points are arranged on the steam turbine to divide the steam turbine into different working areas. And selecting a proper access point to enter the turbine according to the temperature and pressure range of the steam. The flue gas that biomass boiler burns the back production gets into power boiler's flue gas processing system, and the flue gas that power boiler produced shares one set of flue gas processing system with. The purified flue gas has waste heat, and can be used as a drying source together with steam extraction of a steam turbine to dry biomass fuel in the biomass boiler, so that the combustion efficiency is improved. The power station boiler feed water and the condensed water of the steam turbine can be conveyed to the biomass boiler to provide a water source for generating steam.
Description
Technical Field
The utility model belongs to biomass power generation field, in particular to power plant boiler coupling biomass boiler system.
Background
China is rich in coal resources and is a main energy structure. Coal generates energy when being combusted, and the energy is converted into electric energy through a power generation power device. However, the coal combustion inevitably brings about emission of carbon dioxide gas. In order to save energy and reduce emission, other fuels are generally needed as supplementary energy structures, so that the power generation efficiency is improved, and the pollution emission is reduced. The biomass energy resource is rich, has the advantages of reproducibility, low pollution, wide distribution and the like, and has important significance for changing the energy use mode and protecting the environment by developing and utilizing renewable clean energy such as biomass and the like.
Biomass refers to various organisms that proceed through photosynthesis, biomass being the form of energy that solar energy stores in the biomass in the form of chemical energy. Biomass can be used as a fuel. Biomass includes all plants, microorganisms and animals that feed on plants, microorganisms and their waste products. Representative biomass materials include crop waste, wood, and wood waste. The narrowly defined biomass fuel mainly refers to lignocellulose (lignin for short) such as straws and trees except grains and fruits in the production process of agriculture and forestry, leftovers in the processing industry of agricultural products, wastes in agriculture and forestry, and livestock and poultry manure and wastes in the production process of animal husbandry. The biomass in the nature is tens of thousands of types, but the biomass can not be effectively utilized according to the requirements of biomass power generation, and according to the years of running experience of domestic biomass direct-fired power generation enterprises, the biomass fuel can be effectively utilized mainly as: grain crop stalks (straw, wheat straw, corn stalks, etc.), forestry wastes (barks, branches, tree roots, etc.), and deep-processed waste products of human and agricultural products (rice hulls, peanut shells, etc.).
The biomass power generation technology can be used for generating electricity by directly combusting biomass, generating electricity by mixing biomass with coal, generating electricity by gasifying biomass, generating electricity by biogas and the like according to the type of biomass fuel, and the biomass power generation technology at present has the problems of high flue gas treatment cost, unstable operation hours and unstable biomass fuel supply. How to solve the problems becomes the key of the development of biomass power generation technology.
SUMMERY OF THE UTILITY MODEL
The utility model aims at utilizing the thermal power plant who has a large amount of existing now, carrying out the coupling with biomass boiler and thermal power plant power boiler, and one set of flue gas processing system of biomass boiler and power plant boiler sharing to greatly reduce the flue gas treatment cost after the biomass burning, and utilize biomass boiler to realize thermal power plant's fuel flexibility and load flexibility.
Specifically, the utility model discloses a realize through following technical scheme:
a power station boiler coupled biomass boiler system comprises a biomass boiler, a power station boiler and a steam turbine, wherein biomass fuel is arranged in the biomass boiler and comprises a feeding port, a slag discharging port and a biomass boiler smoke discharging connecting pipe; and the flue gas generated by the biomass boiler is communicated with a flue gas treatment system of the power station boiler through a smoke exhaust connecting pipe. The steam generated by the biomass boiler replaces part of steam generated by burning coal of the power station boiler, and is beneficial to reducing carbon emission. Biomass boiler and power plant boiler share one set of flue gas processing system, need not to set up extra equipment and purifies the flue gas that biomass boiler produced.
Further, the steam of the power station boiler is communicated with the steam turbine through a first steam communication pipe, the steam of the biomass boiler is communicated with the steam turbine through a second steam communication pipe, and/or the steam turbine is communicated with the reheating hot section steam communication pipe through a reheater. Steam of the biomass boiler enters the steam turbine after being heated by the reheater, so that the temperature and pressure of the entering steam are improved, and the working efficiency of the steam turbine is improved.
Further, steam entering the steam turbine passes through the reheater through a reheat cold section steam connecting pipe, and is communicated with the steam turbine through a reheat hot section steam connecting pipe. The temperature of the steam entering the steam turbine can be reduced after work or power generation, and the steam can be repeatedly recycled after being heated by the reheater.
Furthermore, the biomass boiler adopts an oxygen-enriched combustion technology, so that the fuel efficiency of the biomass boiler and the temperature in the hearth are improved.
Furthermore, the power station boiler feed water and/or the condensed water of the steam turbine are communicated with the biomass boiler through a feed water pipeline, and the biomass boiler directly burns water to change the water into steam, so that water circulation and resource saving are facilitated.
Furthermore, one end of the biomass boiler smoke exhaust connecting pipe is communicated with the biomass boiler, and the other end of the biomass boiler smoke exhaust connecting pipe is arranged in front of the economizer, the air preheater or the smoke treatment system.
Further, the biomass fuel in the biomass boiler comprises at least one of biomass briquette fuel, biomass gas or biomass oil.
Further, furnace flue gas and/or steam turbine extraction steam discharged by the flue gas treatment system are connected with the feeding port through a drying pipe. Furnace flue gas and/or steam extracted by a steam turbine discharged by the biomass boiler and the power station boiler can be used as a heat source to dry biomass fuel in the biomass boiler. The dried biomass fuel can be combusted more fully without installing other drying equipment.
The utility model discloses the beneficial effect who gains is:
(1) the steam generated by the biomass fuel burning in the biomass boiler is used for replacing part of the steam generated by the coal burning of the power station boiler. The biomass fuel is usually waste, so that the biomass fuel can be reused, and carbon emission reduction of a thermal power plant can be realized;
(2) the flue gas discharged by the biomass boiler utilizes a flue gas treatment system of the power station boiler, namely a desulfurization, denitrification and dust removal device, so that the investment of flue gas treatment equipment of the biomass boiler is reduced;
(3) flue gas discharged by a power station boiler and a biomass boiler or steam extracted by a steam turbine is used as a drying heat source of the biomass fuel, so that the moisture content of the biomass fuel before entering the biomass boiler is reduced, and the boiler efficiency of the biomass boiler is improved.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings required for the present invention will be briefly described below, and obviously, the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive labor.
Fig. 1 is a schematic structural diagram of a coupling biomass boiler system of a utility boiler according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a coupling biomass boiler system of a utility boiler according to another embodiment of the present invention.
Description of reference numerals:
1. the biomass boiler comprises a biomass boiler, a power station boiler, a steam turbine, a steam drum, a superheater, a coal economizer, a boiler, a flue gas treatment system, a reheating hot section steam connecting pipe, a reheating cold section steam connecting pipe, a reheater, a biomass boiler smoke exhaust connecting pipe, a water supply pipeline, a high-pressure cylinder access point, a medium-pressure cylinder access point, a low-pressure cylinder access point, a reheating cold section access point, a slag discharge port, a flue and a drying pipe, wherein the biomass boiler comprises a biomass boiler, a power station boiler, a steam turbine, a steam drum, a superheater, a coal economizer, a reheater, a boiler 61, an.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items. It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, the first information may also be referred to as second information, and similarly, the second information may also be referred to as first information, without departing from the scope of the present invention.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Example 1
As shown in fig. 1, a utility boiler coupled biomass boiler system includes a biomass boiler 1, a utility boiler 2 and a steam turbine 3. The utility boiler 2 is built by relying on the existing coal-fired system of the thermal power plant. And a steam drum 4, a superheater 5, an economizer 6, a flue 21 and a flue gas treatment system 7 are arranged in the power station boiler 2. The economizer 6 is installed in the flue 21. The flue gas treatment system 7 comprises a desulfurization tower, a denitration device and a dust remover, and is installed at the tail part of the flue 21. The biomass boiler 1 uses biomass as fuel and comprises a feeding port 19, a slag discharge port 20 and a biomass boiler smoke discharge connecting pipe 13.
And (3) sending the biomass fuel into the biomass boiler 1 through the feeding port 19, wherein the biomass fuel generates steam, slag and flue gas after being burnt. The slag is discharged through the slag discharge port 20, and the steam generated by the biomass boiler 1 is introduced into the turbine 3 along the second steam connection pipe 9, or may be heated by the reheater 12 and introduced into the turbine 3 through the reheating heat section steam connection pipe 10. The air feeder sends cold air to an air preheater at the tail part of the power station boiler 2, the air preheater absorbs heat of discharged flue gas, heats the cold air into hot air and then conveys the hot air to the power station boiler 2, one part of the hot air dries fire coal, and the other part of the hot air is directly guided to the fire coal for combustion (not shown in the figure). After the coal in the power station boiler 2 is combusted, steam-water separation and steam purification are carried out through the steam drum 4. The separated and purified steam is sent to the superheater 5 to be further heated to a required temperature, and then enters the steam turbine 3 through a first steam communication pipe 8. And the steam generated by the biomass boiler 1 is coupled with the steam generated by the power station boiler 2 to apply work to the steam turbine 3 or realize power generation. The steam generated by the biomass boiler 1 replaces a part of the steam generated by the power station boiler 2, so that the consumption and the use of the power station boiler 2 are reduced, and the carbon emission of a thermal power plant is realized. The water separated by the steam drum 4 passes through the economizer 6 along the inlet end 61 of the economizer 6 and can provide water for the utility boiler 2.
Meanwhile, the sulfur, nitrogen and dust containing flue gas generated by the biomass boiler 1 enters the flue gas treatment system 7 through the biomass boiler flue gas communication pipe 13 along the flue 21. And the flue gas generated after the coal combustion of the power station boiler 2 is also discharged into the flue gas treatment system 7 through the flue 21. The flue gas that biomass boiler 1 produced and the flue gas that power plant boiler 2 produced all use flue gas processing system 7 discharges after desulfurizing tower, denitrification facility and dust remover purification treatment, reduces the pollution to the environment. The denitration device can adopt an SNCR denitration technology, and the dust remover can adopt cyclone separation primary dust removal and atomization spraying secondary dust removal. The biomass boiler 1 and the power station boiler 2 share one set of flue gas treatment system 7, so that the investment on flue gas treatment equipment of the biomass boiler 1 can be reduced.
The flue gas that biomass boiler 1 produced with the flue gas that power plant boiler 2 produced mix in flue 21, install in economizer 6 in flue 21 absorbs the heat of mixing the flue gas, not only can reduce the exhaust gas temperature of mixing the flue gas, can heat moreover through the water of steam pocket 4 separation. When the water is recycled, fuel can be saved in the process of heating the water to produce steam due to preheating in advance.
Example 2
A power station boiler is coupled with a biomass boiler system, and a steam turbine 3 is provided with a high pressure cylinder access point 15, an intermediate pressure cylinder access point 16, a low pressure cylinder access point 17 and a reheating cold section access point 18. The access point divides the steam turbine 3 into different operating regions. And the access point is provided with an induction device and a valve for acquiring the temperature and pressure value of the steam. The sensing device is provided with a fixed temperature pressure range. When the steam generated by the biomass boiler 1 or the utility boiler 2 conforms to the temperature and pressure range corresponding to the sensing device on a certain access point, the corresponding valve is opened, and the steam enters the working area of the steam turbine 3 connected with the access point, so that the work or the power generation of the steam turbine 3 is realized. The temperature of the steam entering the steam turbine 3 is reduced after work or power generation is finished, the induction device arranged at the reheating and cooling section access point 18 can sense the temperature, and the steam with the reduced temperature is discharged through the reheating and cooling section access point 18, is reheated and is sent into the steam turbine 3.
In this embodiment, as shown in fig. 1. The steam entering the steam turbine 3 has different temperature and pressure, so that the steam turbine 3 is distributed in a trapezoidal shape from high to low, and the steam does work in the steam turbine 3 step by step. After the coal in the power station boiler 2 is combusted, the steam and the water are separated by the steam drum 4, and the obtained steam is further heated by the superheater 5. The temperature and pressure are highest because the steam generated by the combustion of the utility boiler 2 is the main steam. The sensing device arranged at the high-pressure cylinder access point 15 can acquire the temperature and pressure range of the steam generated by the utility boiler 2, and at the moment, the valve at the high-pressure cylinder access point 15 is opened. The steam generated by the utility boiler 2 enters the steam turbine 3 along the first steam communication pipe 8 and the high pressure cylinder access point 15. The steam generated by the biomass boiler 1 may be directly fed into the turbine 3, or may be reheated by a reheater 12 and fed into the turbine 3. The sensing device of the low-pressure cylinder access point 17 can sense the temperature and pressure range of the steam directly generated by the biomass boiler 1, and open the corresponding valve. As the steam from the biomass boiler 1 is further heated and the temperature rises, the sensing device of the intermediate pressure cylinder access point 16 can sense the temperature and pressure range of the steam further heated by the reheater 12, so that the corresponding valve is opened. A part of the steam generated by the biomass boiler 1 can enter the steam turbine 3 through the low-pressure cylinder access point 17 along the second steam communication pipe 9, and the other part of the steam is heated by the reheater 12 and then enters the steam turbine 3 through the intermediate-pressure cylinder access point 16 along the reheating hot section steam communication pipe 10.
The reheat cooling section steam connecting pipe 11 has one end connected to the reheat cooling section connection point 18 and the other end connected to the reheater 12. The steam entering the turbine 3, if the temperature drops, can trigger the induction device of the reheat cooling section access point 18 to open the valve. This reduced temperature steam passes through the cold reheat section steam tie 11 to the reheater 12 for heating via the cold reheat section access point 18. The heated steam enters the steam turbine 3 through the intermediate pressure cylinder access point 16 along the reheat section steam communication pipe 10. The steam entering the steam turbine 3 has different temperature and pressure ranges, and a temperature and pressure sensing device is arranged at the access point, so that the steam enters different working areas of the steam turbine 3 respectively. The steam turbine can be stably operated, and the steam utilization rate is improved.
Set up the counter-current valve on first steam connecting pipe 8, second steam connecting pipe 9, reheat hot section steam connecting pipe 10 and reheat cold section steam connecting pipe 11, prevent the steam reflux, improve the security of device.
Example 3
A power station boiler coupled biomass boiler system needs to be dried and then burnt when the biomass fuel contains a large amount of moisture. The steam generated after the biomass boiler 1 is incinerated and the steam generated after the power station boiler 2 is combusted are mixed in the flue 21, and the flue gas purified by the desulfurizing tower, the denitrifying device and the dust remover of the flue gas treatment system 7 still has certain heat. The purified furnace flue gas can be used as a drying heat source to dry moisture in the biomass fuel. The extraction steam of the steam turbine 3 can also be used as a drying heat source. As shown in fig. 2, the waste heat of the flue gas purified by the flue gas treatment system 7 and the extracted steam of the steam turbine 3 are communicated with the feeding port 19 through the drying pipe 22 to dry the biomass fuel, so that a sufficient drying heat source is provided for the biomass fuel, the operation cost of the drying equipment is effectively reduced, the moisture content is reduced, and the resource waste is avoided.
Example 4
The utility model provides a power boiler coupling biomass boiler system, after power boiler 2 burns, through steam drum 4 carries out steam-water separation, and high-temperature steam is used for making steam turbine 3 does work or generates electricity, and the water that obtains after the separation process economizer 6 heats the back, can flow in along water supply line 14 in the biomass boiler 1. The water can provide a water source for generating steam by burning the biomass boiler 1, and the water heated by the economizer 6 is preheated before entering the biomass boiler 1, so that the generation of the steam is facilitated. After the steam turbine 3 finishes acting or generating power, the steam can be condensed by a condenser, and the condensed water is conveyed into the biomass boiler 1 along the water supply pipeline 14. The feed water of the utility boiler 1 and the condensed water of the steam turbine 3 may provide a water source for the combustion of the biomass boiler 1 to generate steam.
Example 5
A utility boiler coupled biomass boiler system, the biomass fuel in the biomass boiler 1 can be at least one of biomass briquette fuel, biomass gas or biomass oil. In order to make the combustion more sufficient, an oxygen-enriched combustion technology can be adopted, and 90% of pure oxygen is introduced into the biomass boiler 1 to improve the combustion temperature and the combustion efficiency of the biomass fuel. When the biomass fuel is biomass molding fuel, such as straw, sludge, mushroom dregs and urban greening waste and other solid, a crushing device is installed in the biomass boiler 1. The biomass fuel is dried by the smoke discharged by the biomass boiler 1 and the power station boiler 2 and the steam extraction action of the steam turbine 3, and then the solid biomass fuel is crushed, so that the combustion area is increased, the combustion efficiency is improved, and the steam discharge of the biomass boiler 1 is facilitated.
Example 6
One end of the biomass boiler smoke exhaust connecting pipe 13 is communicated with the biomass boiler 1, and the other end of the smoke exhaust connecting pipe can be connected with any one device of the economizer 6, the air preheater or the smoke treatment system 7 in the flue 21. The smoke discharged by the biomass boiler 1 and the power station boiler 2 has certain heat. When one end of the biomass boiler flue gas communication pipe 13 is disposed at the outlet end 62 of the economizer 6, the outlet end 62 may also serve as an inlet end in this embodiment. The water used for generating steam by burning coal in the utility boiler 2 is heated by high-temperature flue gas discharged from the biomass boiler smoke exhaust communicating pipe 13 through the outlet end 62, and the temperature of the water-steam mixture entering the steam drum 4 through the economizer 6 is increased. When one end of the biomass boiler smoke exhaust communicating pipe 13 is arranged in front of the air preheater, a heat source can be provided to heat cold air entering the air preheater, so that the coal drying efficiency and the temperature of air entering a combustor are improved. In fig. 1 and 2, when one end of the biomass boiler flue gas communication pipe 13 is arranged in front of the flue gas treatment system 7, that is, before flue gas is discharged into a flue gas inlet position of the flue gas treatment system 7, the flue gas discharged after purification has a certain amount of heat, and can be used as a drying heat source to dry biomass fuel in the biomass boiler 1.
Example 7
An operation method of a power station boiler coupled biomass boiler system comprises the following steps:
A1. furnace smoke of the biomass boiler and the power station boiler purified by the smoke treatment system and/or steam extracted by a steam turbine are/is used as heat sources to dry the biomass fuel, and the dried biomass fuel is sent into the biomass boiler to be burnt;
A2. conveying condensed water of the power station boiler water supply and/or the steam turbine into the biomass boiler through a water supply pipeline to provide a water source for generating steam by burning the biomass boiler;
A3. steam generated by the power station boiler is heated by a heater and then enters the steam turbine, the steam generated by the biomass boiler is communicated with the steam turbine through a second steam communication pipe and/or is communicated with the steam turbine through a reheater hot section steam communication pipe, steam is selected to enter an access point of the steam turbine according to pressure and temperature of the steam generated by combustion of the biomass boiler and the power station boiler, and when the temperature of the steam in the steam turbine is reduced, the steam can be communicated with the reheater cold section access point according to the temperature and pressure of the steam, and the steam enters the steam turbine after being heated by the reheater, so that the work of the steam turbine is realized or the steam turbine is driven to generate electricity;
A4. and (2) enabling the flue gas burned by the biomass boiler in the A1 to enter a flue gas treatment system of the power station boiler through the biomass boiler flue gas discharge connecting pipe, mixing the flue gas with the flue gas generated by the combustion of the power station boiler, purifying, and discharging to the feeding port.
Example 8
This embodiment specifically describes a method for calculating the corresponding carbon emission reduction according to the steam flow, pressure, and temperature generated by the biomass boiler 1, and the enthalpy value and the exhaust enthalpy value entering the steam turbine 3.
Steam generated by replacing the coal fired by the power station boiler 2 by the biomass boiler 1 enters a steam turbine 3 of the thermal power plant to drive a generator to generate power, the generated energy generated by the part of steam is converted into the coal fired quantity according to the power generation efficiency of the thermal power plant, and the carbon emission quantity generated by the part of coal fired quantity is the carbon emission reduction quantity generated by the biomass boiler 1, and the specific calculation steps, the formula and the method are as follows:
step 1: the steam generated by the biomass boiler enters a steam turbine to generate power:
Praw steam＝DRaw steam*[(hRaw steam 0-hExhaust steam)/3600]*ηe
＝DRaw steam*[(hRaw steam 0-hExhaust steam)/3600]*ηi*ηm*ηg
Wherein P isRaw steamThe generated energy of steam generated by the biomass boiler entering a steam turbine is kW;
Draw steamThe steam amount of the steam generated by the biomass boiler and fed into a steam turbine to do work is kg/h;
hraw steam 0The enthalpy value of an inlet for steam generated by a biomass boiler to enter a steam turbine is kJ/kg;
hexhaust steamThe enthalpy value of exhaust steam after the steam generated by the biomass boiler enters a steam turbine to do work is kJ/kg;
ηefor the absolute electrical efficiency of the unit, ηe＝ηi*ηm*ηg；
ηiEfficiency in the steam turbine; etamThe mechanical transmission efficiency of the steam turbine; etagTo the generator efficiency;
step 2: according to PRaw steamCorrespondingly calculating the corresponding standard coal fuel consumption of the thermal power generating unit, namely if the thermal power generating unit realizes the generating capacity value PRaw steamThe calculation formula of the standard coal amount required by the boiler of the thermal power generating unit is as follows:
Dmarking coal＝PRaw steam*bcp＝PRaw steam*[3600/(q1*ηb*ηp*ηe]
Wherein DMarking coalMarking the combustion amount of coal for the power station boiler which needs to be consumed correspondingly, kg/h;
Praw steamThe generated energy of steam generated by the biomass boiler entering a steam turbine is kW;
bcpthe coal consumption rate of the whole thermal power plant is kg/(kWh);
q129270kJ/kg which is the lower calorific value of standard coal;
ηbto boiler efficiency; etapFor pipeline efficiency;
ηefor the absolute electrical efficiency of the unit, ηe＝ηi*ηm*ηg；
And step 3: burning DMarking coalIs corresponding CO2Discharge capacity:
according to the related data service channel: CO produced by complete combustion of 1 ton of standard coal2The carbon emission coefficient (unit: ton carbon/ton standard coal (tc/tce)) is: the recommended value of the national institute of energy and reform committee is 0.67, the reference value of the japan institute of energy and economy is 0.68, and the reference value of the energy information service of the U.S. department of energy is 0.69. We tentatively calculated the "carbon emission coefficient" of 1kg of standard coal to be 0.68.
I.e. carbon emission ECO2＝DMarking coal*0.68*0.001。
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a power boiler coupling biomass boiler system, includes power boiler (2) and steam turbine (3), power boiler (2) are including steam pocket (4), over heater (5), economizer (6), flue (21) and flue gas processing system (7), its characterized in that: the coupling biomass boiler system of the power station boiler further comprises a biomass boiler (1), biomass fuel is arranged in the biomass boiler (1) and comprises a feeding port (19), a slag discharging port (20) and a biomass boiler smoke discharging connecting pipe (13), and steam of the biomass boiler (1) and steam of the power station boiler (2) are respectively communicated with the steam turbine (3) through steam connecting pipes; and the smoke generated by the biomass boiler (1) is communicated with a smoke treatment system (7) of the power station boiler (2) through the smoke exhaust connecting pipe (13).
2. The utility boiler coupled biomass boiler system of claim 1, wherein: the steam of the power station boiler (2) is communicated with the steam turbine (3) through a first steam communication pipe (8), the steam of the biomass boiler (1) is communicated with the steam turbine (3) through a second steam communication pipe (9), and/or is communicated with the steam turbine (3) through a reheating hot section steam communication pipe (10) through a reheater (12).
3. The utility boiler coupled biomass boiler system of claim 2, wherein: the steam entering the steam turbine (3) passes through the reheater (12) through the reheater cold section steam connecting pipe (11) and is communicated with the steam turbine (3) through the reheater hot section steam connecting pipe (10).
4. The utility boiler coupled biomass boiler system of claim 1, wherein: the water supply of the power station boiler (2) and/or the condensed water of the steam turbine (3) are communicated with the biomass boiler (1) through a water supply pipeline (14).
5. The utility boiler coupled biomass boiler system of claim 1, wherein: one end of the biomass boiler smoke exhaust connecting pipe (13) is communicated with the biomass boiler (1), and the other end of the smoke exhaust connecting pipe is arranged in front of the economizer (6), the air preheater or the smoke treatment system (7).
6. The utility boiler coupled biomass boiler system of claim 1, wherein: the biomass fuel in the biomass boiler (1) comprises at least one of biomass briquette fuel, biomass gas or biomass oil.
7. The utility boiler coupled biomass boiler system of claim 1, wherein: the furnace flue gas discharged by the flue gas treatment system (7) and/or the extracted steam of the steam turbine (3) are connected with the feeding port (19) through a drying pipe (22).
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112944314A (en) * | 2019-12-11 | 2021-06-11 | 赫普能源环境科技有限公司 | Power station boiler coupled biomass boiler system and operation method |
| CN115095846A (en) * | 2022-06-20 | 2022-09-23 | 连云港虹洋热电有限公司 | A comprehensive energy-saving device for deep steam waste heat recovery of industrial coal-fired boilers |
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2019
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112944314A (en) * | 2019-12-11 | 2021-06-11 | 赫普能源环境科技有限公司 | Power station boiler coupled biomass boiler system and operation method |
| CN115095846A (en) * | 2022-06-20 | 2022-09-23 | 连云港虹洋热电有限公司 | A comprehensive energy-saving device for deep steam waste heat recovery of industrial coal-fired boilers |
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