Integrated heat exchange incinerator device
Technical Field
The invention relates to the technical field of incinerators, in particular to an integrated heat exchange incinerator device.
Background
VOCs can be generated in the industrial production process, and are volatile organic compounds. The VOCs have the advantages of more pollutant types, different properties and different complexity and working conditions of VOCs produced in production processes in various industries.
For the treatment of VOCs waste gas with large air quantity, low concentration or unstable concentration, the adsorption concentration and combustion process is widely applied. The high-air-quantity and low-concentration VOCs waste gas is converted into low-air-quantity and high-concentration VOCs waste gas through the rotating wheel concentration device. The main purpose of concentration is to reduce the amount of exhaust gas to be treated later, and to increase the concentration of VOCs in the exhaust gas to reach the concentration that can be burnt. The adsorption concentration and combustion process includes the steps that the waste gas containing VOCs passes through an adsorption area of a zeolite rotating wheel, is discharged after reaching the standard through adsorption, the VOCs adsorbed on the zeolite rotating wheel enter a desorption area, are desorbed by hot air at 180-220 ℃, and the high-concentration VOCs waste gas after desorption enters a combustion furnace to be subjected to high-temperature combustion treatment, so that CO 2 and H 2 O reach the standard and are discharged. The effective utilization of waste heat of waste gas in the process system is crucial, the heat recycling after combustion can be improved through adding heat exchanger equipment, as in the patents CN113739170A and CN212215048U, the occupied area of the heat exchanger and the combustion furnace equipment in the process system is larger, the heat exchanger, the combustion furnace and the zeolite rotating wheel are connected through pipelines, the lengths of the pipelines are increased through separate arrangement, the flow of waste gas is prolonged, and the heat loss is larger.
Disclosure of Invention
The invention provides an integrated heat exchange incinerator device which is used for solving the defect of large heat loss in the heat exchange process in the prior art and realizing efficient heat exchange.
The present invention provides an integrated heat exchange incinerator device, comprising:
The device comprises a device shell, wherein a combustion chamber is arranged in the device shell, a gas port is arranged on one side wall of the combustion chamber, and a smoke outlet is arranged on the other side wall of the combustion chamber;
The high-temperature heat exchanger is positioned at one side of the smoke outlet of the combustion chamber and comprises a high-temperature heat exchange shell, high-temperature heat exchange tubes are densely distributed in the high-temperature heat exchange shell, two ends of each high-temperature heat exchange tube respectively penetrate through two opposite side walls of the high-temperature heat exchange shell, and one end of each high-temperature heat exchange tube is communicated with the gas port;
The low-temperature heat exchanger is positioned at one side of the high-temperature heat exchanger far away from the combustion chamber and comprises a low-temperature heat exchange shell, low-temperature heat exchange pipes are densely distributed in the low-temperature heat exchange shell, and two ends of each low-temperature heat exchange pipe respectively penetrate through two opposite side walls of the low-temperature heat exchange shell;
The smoke outlet, the high-temperature heat exchange shell and the low-temperature heat exchange shell are sequentially communicated.
According to the integrated heat exchange incinerator device provided by the invention, the high-temperature heat exchanger further comprises a high-temperature air inlet shell and a high-temperature air outlet shell, the high-temperature air inlet shell and the high-temperature air outlet shell are respectively positioned at two sides of the high-temperature heat exchange shell, two ends of the high-temperature heat exchange tube are respectively communicated with the high-temperature air inlet shell and the high-temperature air outlet shell, a high-temperature air outlet is arranged on the side wall of the high-temperature air outlet shell, and the high-temperature air outlet is communicated with the gas port through a gas transmission channel.
According to the integrated heat exchange incinerator device provided by the invention, the high-temperature air inlet shell extends upwards to the outside of the device shell and is provided with the high-temperature air inlet.
According to the integrated heat exchange incinerator device provided by the invention, the low-temperature heat exchange shell comprises a first low-temperature heat exchange shell and a second low-temperature heat exchange shell, the first low-temperature heat exchange shell is positioned above the second low-temperature heat exchange shell, a first guide shell is arranged between the first low-temperature heat exchange shell and the second low-temperature heat exchange shell, one end of the first low-temperature heat exchange shell is provided with a second guide shell, one end of the second low-temperature heat exchange shell, which is far away from the second guide shell, is provided with a third guide shell, the upper side of the third guide shell is provided with a low-temperature air inlet shell, one end of the second low-temperature heat exchange shell, which is far away from the third guide shell, is provided with a low-temperature air outlet shell, two ends of a low-temperature heat exchange tube in the first low-temperature heat exchange shell are respectively communicated with the low-temperature air inlet shell and the second guide shell, the first guide shell and the third guide shell are sequentially communicated, two ends of the low-temperature heat exchange tube in the second low-temperature heat exchange shell are respectively communicated with the third guide shell and the low-temperature air inlet shell Wen Chuqi, and the low-temperature heat exchange shell is communicated with the third guide shell.
According to the integrated heat exchange incinerator device provided by the invention, the low-temperature air inlet shell extends upwards to the outside of the device shell and is provided with the low-temperature air inlet, and the low-temperature air outlet shell extends upwards to the outside of the device shell and is provided with the low-temperature air outlet.
According to the integrated heat exchange incinerator device provided by the invention, the two sides of the first low-temperature heat exchange shell, which are different from the end parts of the low-temperature heat exchange tubes, are respectively provided with the first smoke exhaust shell and the second smoke exhaust shell, the first smoke exhaust shell is communicated with one end of the first low-temperature heat exchange shell, the other end of the first low-temperature heat exchange shell is communicated with one end of the second low-temperature heat exchange shell through the second smoke exhaust shell, one end of the second low-temperature heat exchange shell, which is far away from the second smoke exhaust shell, is communicated with one end of the high-temperature heat exchange shell through a hose, and one end of the high-temperature heat exchange shell, which is far away from the hose, is communicated with the smoke outlet.
According to the integrated heat exchange incinerator device provided by the invention, the first smoke discharging shell is bent towards the top of the first low-temperature heat exchange shell and then extends upwards to the outside of the device shell, and a smoke discharging port is arranged.
According to the integrated heat exchange incinerator device provided by the invention, the two sides of the high-temperature heat exchange shell, which are different from the end part of the Gao Wenhuan heat pipe, are respectively connected with the hose and the smoke outlet.
The integrated heat exchange incinerator device provided by the invention has the advantages that the high-temperature heat exchanger, the low-temperature heat exchanger and the combustion chamber are integrated into the integrated structure, so that the occupied area of process equipment can be reduced, the construction and the installation are convenient, the flow of waste gas can be shortened by the integrated structure, the heat utilization rate can be improved, the temperature of the waste gas entering the combustion chamber is improved, the consumption of fuel (natural gas) is reduced, the flow of flue gas emission can be shortened by the incinerator device, the consumption of heat preservation pipelines is reduced, the occupied area of the equipment is reduced, and the investment cost is saved.
Drawings
In order to more clearly illustrate the invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic illustration of the interior of a front view of the housing of the device provided by the present invention;
FIG. 2 is a schematic top view of the interior of the device housing provided by the present invention;
FIG. 3 is a schematic view of the structure of the high temperature heat exchanger with the high temperature heat exchange tubes removed;
FIG. 4 is a side view of a high temperature heat exchanger;
FIG. 5 is a schematic view of the cryogenic heat exchanger with the cryogenic heat exchange tubes removed;
FIG. 6 is a side cross-sectional view of the cryogenic heat exchanger with the cryoheat exchange tubes removed;
FIG. 7 is a diagram of the flue gas emission paths in the high temperature heat exchanger and the low temperature heat exchanger;
Fig. 8 is a process flow diagram of an integrated heat exchange incinerator apparatus provided by the present invention.
Reference numerals:
100. the device comprises a device shell, a 101, an access door, a 102 and an explosion unloading valve;
200. High temperature heat exchanger, 201, high temperature heat exchange shell, 202, high temperature heat exchange tube, 203, high temperature air inlet shell, 2031, high temperature air inlet, 204, high Wen Chuqi shell, 2041, high temperature air outlet;
300. The low-temperature heat exchanger comprises a low-temperature heat exchanger body 301, a low-temperature heat exchange body 3011, a first low-temperature heat exchange body 3012, a second low-temperature heat exchange body 302, a low-temperature heat exchange tube 303, a first guide body 304, a second guide body 305, a third guide body 306, a low-temperature air inlet body 3061, a low-temperature air inlet 307, a low-temperature air outlet body 3071 and a low-temperature air outlet;
400. Zeolite rotating wheel, 401, adsorption zone, 402, cooling zone, 403, desorption zone;
500. a combustion chamber; 501, a fuel gas port, 502, a smoke outlet, 503, a heat insulation layer;
600. 601, hose;
700. a first fume exhaust housing; 701, a second smoke exhaust shell, 702, a smoke exhaust port;
800. And (5) a chimney.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The integrated heat exchange incinerator device of the present invention, which is used in combination with the zeolite wheel 400, is described below with reference to fig. 1 to 8, including a device housing 100, a high temperature heat exchanger 200, and a low temperature heat exchanger 300.
A plurality of access doors 101 are arranged on the side wall of the device shell 100, and an explosion relief valve 102 is arranged on one side wall of the device shell 100;
The device comprises a device shell 100, a combustion chamber 500, a gas port 501, a nozzle, a smoke outlet 502, a heat insulating layer 503 and aluminum silicate, wherein the combustion chamber 500 is arranged in the device shell 100, the gas port 501 is arranged on one side wall of the combustion chamber 500, the nozzle is connected to the gas port 501, the smoke outlet 502 is arranged on the other side wall of the combustion chamber 500, and the heat insulating layer 503 is arranged on the side wall of the combustion chamber 500.
The high-temperature heat exchanger 200 is positioned at one side of a smoke outlet 502 of the combustion chamber 500, the high-temperature heat exchanger 200 comprises a high-temperature heat exchange shell 201, high-temperature heat exchange pipes 202 are densely distributed in the high-temperature heat exchange shell 201, gaps exist between the high-temperature heat exchange pipes 202, two ends of the high-temperature heat exchange pipes 202 respectively penetrate through two opposite side walls of the high-temperature heat exchange shell 201, and one end of each high-temperature heat exchange pipe 202 is communicated with a gas inlet 501;
The high-temperature heat exchanger 200 further comprises a high-temperature air inlet shell 203 and a high-temperature air outlet shell 204, wherein the high-temperature air inlet shell 203 and the high-temperature air outlet shell 204 are respectively positioned on two sides of the high-temperature heat exchange shell 201, two ends of the high-temperature heat exchange tube 202 are respectively communicated with the high-temperature air inlet shell 203 and the high-temperature air outlet shell 204, a high-temperature air outlet 2041 is arranged on the side wall of the high Wen Chuqi shell 204, the high-temperature air outlet 2041 is communicated with the gas port 501 through a gas transmission channel 600, and the high-temperature air inlet shell 203 extends upwards to the outside of the device shell 100 and is provided with a high-temperature air inlet 2031.
The low-temperature heat exchanger 300 is positioned at one side of the high-temperature heat exchanger 200 far away from the combustion chamber 500, the low-temperature heat exchanger 300 comprises a low-temperature heat exchange shell 301, low-temperature heat exchange tubes 302 are densely distributed in the low-temperature heat exchange shell 301, gaps exist between the low-temperature heat exchange tubes 302, and two ends of the low-temperature heat exchange tubes 302 respectively penetrate through two opposite side walls of the low-temperature heat exchange shell 301;
The low-temperature heat exchange shell 301 comprises a first low-temperature heat exchange shell 3011 and a second low-temperature heat exchange shell 3012, the first low-temperature heat exchange shell 3011 is located above the second low-temperature heat exchange shell 3012, a first guide shell 303 is arranged between the first low-temperature heat exchange shell 3011 and the second low-temperature heat exchange shell 3012, a second guide shell 304 is arranged at one end of the first low-temperature heat exchange shell 3011, a third guide shell 305 is arranged at one end of the second low-temperature heat exchange shell 3012 far away from the second guide shell 304, a low-temperature air inlet shell 306 is arranged at the upper side of the third guide shell 305, a low-temperature air outlet shell 307 is arranged at one end of the second low-temperature heat exchange shell 3012 far away from the third guide shell 305, two ends of a low-temperature heat exchange tube 302 in the first low-temperature heat exchange shell 3011 are respectively communicated with the low-temperature air inlet shell 306 and the second guide shell 304, the second guide shell 303, the first guide shell 305 are respectively communicated with the two ends of the low-temperature heat exchange shell 3012 are respectively communicated with the third guide shell 305 and the low-temperature Wen Chuqi shell 306, an air outlet of the low-temperature heat exchange shell 307 is further arranged at the lower end of the low-temperature heat exchange shell 3012, the low-temperature heat exchange shell 302 is upwards extends to the low-temperature air outlet shell 3067 to the low-temperature air outlet side 100, and extends upwards to the low-temperature air outlet side of the low-temperature heat exchange shell 307, and is further upwards to reach the low-temperature air outlet device 100, and is arranged at the low temperature air outlet side, and extends upwards, and is connected to the low temperature heat exchange shell, and has a low temperature heat device, and has a device.
The smoke outlet 502, the high-temperature heat exchange shell 201 and the low-temperature heat exchange shell 301 are sequentially communicated, specifically, a first smoke discharging shell 700 and a second smoke discharging shell 701 are respectively arranged on two sides of the end part of the first low-temperature heat exchange shell 3011 different from the end part of the low-temperature heat exchange tube 302, the first smoke discharging shell 700 is communicated with one end of the first low-temperature heat exchange shell 3011, the other end of the first low-temperature heat exchange shell 3011 is communicated with one end of the second low-temperature heat exchange shell 3012 through the second smoke discharging shell 701, one end of the second low-temperature heat exchange shell 3012, far away from the second smoke discharging shell 701, is communicated with one end of the high-temperature heat exchange shell 201 through a hose 601, and one end of the high-temperature heat exchange shell 201, far away from the hose 601, is communicated with the smoke outlet 502. The two sides of the high-temperature heat exchange shell 201, which are different from the end parts of the high-temperature heat exchange tubes 202, are respectively connected with a hose 601 and a smoke outlet 502. The first smoke exhaust housing 700 is bent toward the top of the first low temperature heat exchange housing 3011 and then extends upward to the outside of the device housing 100 and is provided with a smoke exhaust port 702.
The zeolite runner 400 is provided with an adsorption zone 401, a cooling zone 402 and a desorption zone 403, wherein the outlet of the cooling zone 402 is communicated with a low-temperature air inlet 3061, a low-temperature air outlet 3071 is communicated with the inlet of the desorption zone 403, the outlet of the desorption zone 403 is communicated with a high-temperature air inlet 2031, the outlet of the adsorption zone 401 is communicated with a chimney 800, and a smoke outlet 702 is communicated with the chimney 800.
When in use, part of the exhaust gas containing VOCs passes through the adsorption area 401 of the zeolite runner 400, is directly discharged to the chimney 800 after reaching the adsorption standard, and simultaneously, a certain amount of exhaust gas containing VOCs is introduced into the cooling area 402 to cool the runner adsorption material so as to improve the desorption efficiency. The waste gas at the outlet of the cooling area 402 enters the low-temperature heat exchanger 300 from the low-temperature air inlet 3061 to exchange heat;
As shown in fig. 5 and 6, after the exhaust gas enters the low-temperature air inlet housing 306 from the low-temperature air inlet 3061, the exhaust gas is split into two paths, wherein one path is an S-shaped path formed by the low-temperature heat exchange tube 302 in the first low-temperature heat exchange housing 3011, the second guide housing 304, the first guide housing 303, the third guide housing 305 and the low-temperature heat exchange tube 302 in the second low-temperature heat exchange housing 3012, and finally is discharged through the low-temperature air outlet 3071 of the low-temperature Wen Chuqi housing 307;
The other path is a U-shaped path formed by a low-temperature air inlet shell 306, a third guide shell 305, a low-temperature heat exchange tube 302 in a second low-temperature heat exchange shell 3012 and a low Wen Chuqi shell 307, and finally is discharged through a low-temperature air outlet 3071;
The design of two routes can shunt waste gas, reduces internal resistance, and S type route has prolonged heat exchange tube side, has improved heat exchange efficiency.
The temperature of the waste gas after heat exchange is increased to 180-220 ℃, and then the waste gas comes out from the low-temperature gas outlet 3071 and enters the desorption region 403 for desorption;
VOCs adsorbed on the zeolite rotating wheel 400 are desorbed by hot air and become high-concentration VOCs waste gas, and then the waste gas firstly enters the high-temperature heat exchanger 200 from the high-temperature air inlet 2031 for heat exchange;
As shown in fig. 3 and 4, the exhaust gas enters the high temperature air inlet housing 203 from the high temperature air inlet 2031, reaches the high Wen Chuqi housing 204 through the high temperature heat exchange tube 202 in the high temperature heat exchange housing 201, and after heat exchange, the temperature of the gas can be increased to 400-500 ℃ and then comes out from the high temperature air outlet 2041, enters the combustion chamber 500 through the gas transmission channel 600 to perform high temperature combustion treatment (760-860 ℃) to save fuel required by heating the combustion chamber 500, the high temperature heat exchange housing 201 can be provided with a plurality of groups side by side to enlarge the heat exchange area, the tube pass of the high temperature heat exchange tube 202 is short, and after heat exchange, the heat dissipation can be reduced, and the heat efficiency is further improved.
High-temperature flue gas generated in the combustion chamber 500 firstly enters the high-temperature heat exchanger 200 from the flue outlet 502 to exchange heat, then enters the low-temperature heat exchanger 300 through the hose 601 to exchange heat, and is discharged to the chimney 800 after heat exchange;
Specifically, as shown in fig. 7, high-temperature flue gas enters the high-temperature heat exchange housing 201 from the flue outlet 502, the flow direction of the high-temperature flue gas is perpendicular to the flow direction of the exhaust gas, the high-temperature flue gas passes through the gaps between the high-temperature heat exchange tubes 202 and exchanges heat with the exhaust gas in the high-temperature heat exchange tubes 202, then enters the second low-temperature heat exchange housing 3012 through the hose 601 and exchanges heat with the low-temperature heat exchange tube 302 in the second low-temperature heat exchange housing 3012, enters the first low-temperature heat exchange housing 3011 through the second smoke discharging housing 701 and exchanges heat with the low-temperature heat exchange tube 302 in the first low-temperature heat exchange housing 3011, and then is discharged to the chimney 800 through the smoke discharging port 702 of the first smoke discharging housing 700.
The high-temperature heat exchanger 200 and the low-temperature heat exchanger 300 are shell-and-tube heat exchangers, the hot air passes through the shell side and the cold air passes through the tube side, the S-shaped and U-shaped path design of the low-temperature heat exchanger 300 is matched with the S-shaped path design during flue gas emission, the tube side of low-temperature heat exchange is prolonged while equipment is further integrated, and the heat exchange efficiency is effectively improved.
It should be noted that the above-mentioned embodiments are merely for illustrating the technical solution of the present invention, and not for limiting the same, and although the present invention has been described in detail with reference to the above-mentioned embodiments, it should be understood by those skilled in the art that the technical solution described in the above-mentioned embodiments may be modified or some technical features may be equivalently replaced, and these modifications or substitutions do not make the essence of the corresponding technical solution deviate from the spirit and scope of the technical solution of the embodiments of the present invention.