CN108800966A - A kind of air-cooled thermal cycle of flue gas utilizes cooling system - Google Patents
A kind of air-cooled thermal cycle of flue gas utilizes cooling system Download PDFInfo
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- CN108800966A CN108800966A CN201811031527.5A CN201811031527A CN108800966A CN 108800966 A CN108800966 A CN 108800966A CN 201811031527 A CN201811031527 A CN 201811031527A CN 108800966 A CN108800966 A CN 108800966A
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- 238000001816 cooling Methods 0.000 title claims abstract description 57
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 44
- 239000003546 flue gas Substances 0.000 title claims abstract description 44
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 34
- 238000005192 partition Methods 0.000 claims abstract description 10
- 239000012535 impurity Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000004064 recycling Methods 0.000 claims description 3
- 238000006477 desulfuration reaction Methods 0.000 abstract description 8
- 230000023556 desulfurization Effects 0.000 abstract description 8
- 239000007789 gas Substances 0.000 description 10
- 238000002844 melting Methods 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- 239000000428 dust Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000004047 hole gas Substances 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/10—Arrangements for using waste heat
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chimneys And Flues (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Treating Waste Gases (AREA)
Abstract
本发明公开了一种烟气空冷热循环利用冷却系统，包括有与窑炉烟气室连通的热交换装置，热交换装置包括有热交换罐，热交换罐内分布有上下错位间隔设置的隔板，隔板将热交换罐隔开呈多个相互连通的腔室，每个腔室内分别设有多根间隔并列设置的热交换管，且相邻腔室之间对应的热交换管之间通过弯头连接；热交换装置后方设有水冷却装置，水冷却装置包括有筒体，筒体内设有螺旋式分布的冷却管道，筒体的底端设有出水口，出水口通过管道连接至自冷却系统。本发明采用空冷和水冷结合的方式，将进口高温烟气冷却到180℃以下，以便烟气进入后续除尘湿法脱硫塔进行脱硫处理，保证烟气达标排放，同时达到了热能的合理利用。
The invention discloses a flue gas air-cooled heat cycle utilization cooling system, which includes a heat exchange device connected with the kiln flue gas chamber. The partition board separates the heat exchange tank into a plurality of interconnected chambers, and each chamber is equipped with a plurality of heat exchange tubes arranged side by side at intervals, and the corresponding heat exchange tubes between adjacent chambers The space is connected by an elbow; there is a water cooling device behind the heat exchange device, and the water cooling device includes a cylinder body, which is provided with spirally distributed cooling pipes, and the bottom end of the cylinder body is provided with a water outlet, which is connected by a pipe to the self-cooling system. The invention adopts the combination of air cooling and water cooling to cool the imported high-temperature flue gas to below 180°C, so that the flue gas enters the subsequent dedusting wet desulfurization tower for desulfurization treatment, ensures that the flue gas meets the standard discharge, and at the same time achieves rational utilization of heat energy.
Description
技术领域：Technical field:
本发明涉及陶瓷制釉生产加工领域，主要涉及一种烟气空冷热循环利用冷却系统。The invention relates to the field of ceramic glaze production and processing, and mainly relates to a cooling system for air-cooling and heat-circulating utilization of flue gas.
背景技术：Background technique:
在现有的陶瓷制釉生产过程中，窑炉熔化炉内火焰出口一方温度很高，尤其是达到1小时左右，温度接近1100度，而熔化炉内耐火温度只能达到1200-1400度，所以熔化炉喷火孔和烟气孔每隔1小时会进行调换，降低喷火孔一端的温度，喷火孔内要进入大量的空气，才能燃烧充分提高温度，但冷空气进入也会降低温度，从而降低热量的利用率。而且熔化炉排放的烟气经过烟气室之后，其温度一般还都在300-320℃之间，烟气中含有较多的粉尘，需后续进行颗粒物的处理达标排放，因此温度偏高，导致后续粉尘处理及脱硫脱硝处理难度增加、投资费用增加，因此对烟气需进行降温冷却处理。In the existing ceramic glaze production process, the temperature of the flame outlet in the kiln melting furnace is very high, especially when it reaches about 1 hour, the temperature is close to 1100 degrees, while the refractory temperature in the melting furnace can only reach 1200-1400 degrees, so The flame hole and flue gas hole of the melting furnace will be replaced every hour to reduce the temperature at one end of the flame hole. A large amount of air must enter the flame hole to fully increase the temperature, but cold air will also reduce the temperature. Thereby reducing the utilization rate of heat. Moreover, after the flue gas discharged from the melting furnace passes through the flue gas chamber, its temperature is generally between 300-320°C. The flue gas contains a lot of dust, and subsequent treatment of particulate matter is required to meet the emission standards. Therefore, the temperature is too high, resulting in Subsequent dust treatment and desulfurization and denitrification treatment are more difficult and investment costs increase, so the flue gas needs to be cooled and cooled.
发明内容：Invention content:
本发明目的就是为了弥补已有技术的缺陷，提供一种烟气空冷热循环利用冷却系统，目的是解决系统中熔化炉出来的烟气温度偏高，需采取降温措施，保证后续除尘脱硫系统达标排放以及低温进气的问题。The purpose of the present invention is to make up for the defects of the prior art, and to provide a flue gas air-cooling and heat recycling cooling system. The issue of standard emissions and low-temperature intake air.
本发明是通过以下技术方案实现的：The present invention is achieved through the following technical solutions:
一种烟气空冷热循环利用冷却系统，包括有与窑炉烟气室连通的热交换装置，所述热交换装置包括有热交换罐，其特征在于：所述热交换罐内分布有上下错位间隔设置的隔板，所述隔板将热交换罐隔开呈多个相互连通的腔室，每个腔室内分别设有多根间隔并列设置的热交换管，且相邻腔室之间对应的热交换管之间通过弯头连接，所述弯头均位于隔板与热交换罐之间的间隙通道内，且连通之后的热交换管的一端为烟气进口，另一端为烟气出口；所述热交换装置后方设有水冷却装置，所述水冷却装置包括有筒体，所述筒体内设有螺旋式分布的冷却管道，所述筒体的底端设有出水口，所述出水口通过管道连接至自冷却系统。A cooling system for flue gas air cooling and heat circulation, including a heat exchange device connected to the furnace flue gas chamber, the heat exchange device includes a heat exchange tank, characterized in that: the heat exchange tank is distributed with upper and lower Separators arranged at staggered intervals, the partitions separate the heat exchange tank into multiple interconnected chambers, each chamber is provided with a plurality of heat exchange tubes arranged side by side at intervals, and the gap between adjacent chambers The corresponding heat exchange tubes are connected by elbows, and the elbows are located in the gap channel between the partition plate and the heat exchange tank, and one end of the connected heat exchange tubes is the flue gas inlet, and the other end is the flue gas inlet. outlet; the rear of the heat exchange device is provided with a water cooling device, the water cooling device includes a cylinder, the cylinder is provided with a spiral distribution of cooling pipes, and the bottom of the cylinder is provided with a water outlet, so The water outlet is connected to the self-cooling system through pipes.
所述的热交换管分别通过固定架固定在热交换罐内，所述固定架为板体结构，其板体上分布有供热交换管穿过的固定孔，所述固定孔外的板体上分布有导气孔。The heat exchange tubes are respectively fixed in the heat exchange tank through a fixing frame, the fixing frame is a plate structure, and fixing holes for the heat exchange tubes to pass through are distributed on the plate body, and the plate body outside the fixing hole Air guide holes are distributed on the top.
所述的热交换罐的罐体为上下两半对合的结构，且其下半部的罐体底端部设有间隔设置的除杂口。The tank body of the heat exchange tank is a structure in which the upper and lower halves are combined, and the bottom end of the lower half of the tank body is provided with impurity removal ports arranged at intervals.
所述的多根间隔并列设置的热交换管的进气端均与总进气管道连通，所述总进气管道的进气口处设有喇叭形风罩，所述多根间隔并列设置的热交换管的出气端均与总出气管道连通，所述总出气管道的出气口通过管道连接至窑炉的进气口。The air intake ends of the plurality of heat exchange tubes arranged side by side at intervals are all communicated with the total air intake pipe, and the air inlet of the total air intake pipe is provided with a trumpet-shaped wind cover, and the plurality of heat exchange pipes arranged side by side at intervals are connected to each other. The gas outlet ends of the heat exchange tubes are all in communication with the main gas outlet pipeline, and the gas outlet of the total gas outlet pipeline is connected to the gas inlet of the kiln through a pipeline.
所述的冷却管道通过其两侧的固定板固定在筒体内。The cooling pipeline is fixed in the barrel through the fixing plates on both sides.
所述的自冷却系统包括有塔体，所述塔体位于水冷却装置的筒体上方，所述塔体内分布有多个倾斜设置的导槽，所述导槽上下间隔错位设置，所述塔体底端的出水口通过管道连接至筒体进水端口。The self-cooling system includes a tower body, the tower body is located above the cylinder body of the water cooling device, a plurality of inclined guide grooves are distributed in the tower body, the guide grooves are arranged at intervals up and down, and the tower body The water outlet at the bottom of the body is connected to the water inlet port of the cylinder through a pipeline.
所述筒体上端部侧壁上设有液位传感器。A liquid level sensor is arranged on the side wall of the upper end of the cylinder.
所述的塔体的底端安装有过滤板，所述过滤板上方设有滤料，所述过滤板下方的塔体底端部设有出水口。A filter plate is installed at the bottom of the tower body, a filter material is arranged above the filter plate, and a water outlet is arranged at the bottom of the tower body below the filter plate.
其原理是：通过采用强力空冷器降温方式对烟气进行降温，同时对常温空气进行预热，预热后的空气做为熔块炉换向时空气的加入，同时做到节能处理。空冷器把高温烟气从320℃冷却到所需要的设计温度180℃以下，以便烟气进入袋式除尘器等后续设备处理，留住大量热量，在进行喷火孔与烟气室进行调换室，大量热空气随喷火孔进入，提高热能利用率，降低能耗。The principle is: to cool the flue gas by using a powerful air cooler to cool down, and at the same time to preheat the air at normal temperature, the preheated air is used as the air to add when the frit furnace changes direction, and at the same time achieve energy-saving treatment. The air cooler cools the high-temperature flue gas from 320°C to the required design temperature below 180°C, so that the flue gas enters the bag filter and other subsequent equipment for treatment, retains a large amount of heat, and performs exchange between the fire spray hole and the flue gas chamber , a large amount of hot air enters with the flame hole, which improves the utilization rate of heat energy and reduces energy consumption.
本发明的优点是：The advantages of the present invention are:
本发明结构设计合理，采用空冷和水冷结合的方式，将进口高温烟气冷却到180℃以下，以便烟气进入后续除尘湿法脱硫塔进行脱硫处理，保证烟气达标排放，同时达到了热能的合理利用。The invention has a reasonable structural design, adopts the combination of air cooling and water cooling, and cools the imported high-temperature flue gas to below 180°C, so that the flue gas enters the follow-up dedusting wet desulfurization tower for desulfurization treatment, ensuring that the flue gas is discharged up to the standard, and at the same time, the heat energy is achieved. Reasonable use.
附图说明：Description of drawings:
图1为本发明的结构示意图。Fig. 1 is a structural schematic diagram of the present invention.
具体实施方式：Detailed ways:
参见附图。See attached picture.
一种烟气空冷热循环利用冷却系统，包括有与窑炉烟气室连通的热交换装置，所述热交换装置包括有热交换罐1，所述热交换罐1内分布有上下错位间隔设置的隔板2，所述隔板2将热交换罐1隔开呈多个相互连通的腔室，每个腔室内分别设有多根间隔并列设置的热交换管3，且相邻腔室之间对应的热交换管3之间通过弯头4连接，所述弯头4均位于隔板2与热交换罐1之间的间隙通道内，且连通之后的热交换管3的一端为烟气进口，另一端为烟气出口；所述热交换装置后方设有水冷却装置，所述水冷却装置包括有筒体5，所述筒体5内设有螺旋式分布的冷却管道6，所述筒体5的底端设有出水口7，所述出水口7通过管道连接至自冷却系统。A flue gas air-cooled heat cycle cooling system, including a heat exchange device communicated with the kiln flue gas chamber, the heat exchange device includes a heat exchange tank 1, and the upper and lower dislocation intervals are distributed in the heat exchange tank 1 The partition plate 2 is provided, and the partition plate 2 separates the heat exchange tank 1 into a plurality of interconnected chambers, and each chamber is respectively provided with a plurality of heat exchange tubes 3 arranged side by side at intervals, and adjacent chambers The corresponding heat exchange tubes 3 are connected by elbows 4, and the elbows 4 are all located in the gap channel between the partition plate 2 and the heat exchange tank 1, and one end of the heat exchange tubes 3 after communication is a smoke The gas inlet is at the other end, and the flue gas outlet is at the other end; a water cooling device is provided behind the heat exchange device, and the water cooling device includes a cylinder body 5, and a spirally distributed cooling pipe 6 is arranged inside the cylinder body 5, so that The bottom end of the cylinder body 5 is provided with a water outlet 7, and the water outlet 7 is connected to a self-cooling system through a pipeline.
所述的热交换管3分别通过固定架8固定在热交换罐1内，所述固定架8为板体结构，其板体上分布有供热交换管穿过的固定孔9，所述固定孔9外的板体上分布有导气孔10。The heat exchange tubes 3 are respectively fixed in the heat exchange tank 1 by a fixing frame 8, the fixing frame 8 is a plate structure, and fixing holes 9 for the heat exchange tubes to pass through are distributed on the plate body, and the fixing Air guide holes 10 are distributed on the plate body outside the hole 9 .
所述的热交换罐1的罐体为上下两半对合的结构，且其下半部的罐体底端部设有间隔设置的除杂口11。The tank body of the heat exchange tank 1 is a structure in which the upper and lower halves are combined, and the bottom end of the lower half of the tank body is provided with impurity removal ports 11 arranged at intervals.
所述的多根间隔并列设置的热交换管3的进气端均与总进气管道13-1连通，所述总进气管道13-1的进气口处设有喇叭形风罩12，所述多根间隔并列设置的热交换管3的出气端均与总出气管道13-2连通，所述总出气管道13-2的出气口通过管道连接至窑炉的进气口。The intake ends of the plurality of heat exchange tubes 3 arranged side by side at intervals are all communicated with the total air intake duct 13-1, and the air intake of the total air intake duct 13-1 is provided with a trumpet-shaped wind cover 12, The gas outlet ends of the multiple heat exchange tubes 3 arranged side by side at intervals are all communicated with the total gas outlet pipeline 13-2, and the gas outlet of the total gas outlet pipeline 13-2 is connected to the air inlet of the kiln through a pipeline.
所述的冷却管道6通过其两侧的固定板14固定在筒体内。The cooling pipeline 6 is fixed in the barrel through the fixing plates 14 on both sides thereof.
所述的自冷却系统包括有塔体15，所述塔体15位于水冷却装置的筒体5上方，所述塔体15内分布有多个倾斜设置的导槽16，所述导槽16上下间隔错位设置，所述塔体15底端的出水口通过管道连接至筒体进水端口。The self-cooling system includes a tower body 15, the tower body 15 is located above the cylinder body 5 of the water cooling device, and a plurality of inclined guide grooves 16 are distributed in the tower body 15, and the guide grooves 16 are arranged up and down. The intervals are staggered, and the water outlet at the bottom of the tower body 15 is connected to the water inlet port of the cylinder through a pipeline.
所述筒体5上端部侧壁上设有液位传感器17。A liquid level sensor 17 is provided on the upper end side wall of the cylinder body 5 .
所述的塔体15的底端安装有过滤板18，所述过滤板18上方设有滤料19，所述过滤板18下方的塔体底端部设有出水口。A filter plate 18 is installed at the bottom of the tower body 15 , a filter material 19 is arranged above the filter plate 18 , and a water outlet is arranged at the bottom end of the tower body below the filter plate 18 .
其具体过程是：较高温度的烟气从烟气室出来以后进入到热交换罐内，通过隔板将热交换罐隔成多个连通的热交换腔室，增加了高温烟气和空气的热交换的交换时间和流程，因此热交换罐内通入空气时，高温烟气可与空气进行充分的热交换，使自然的空气的温度升高，达到一定程度，从出气口经过总出气管道进入到窑炉的进气口中，对进入的空气进行预热，达到了资源的合理利用。The specific process is: the flue gas with higher temperature enters the heat exchange tank after coming out of the flue gas chamber, and the heat exchange tank is divided into multiple connected heat exchange chambers through the partition plate, which increases the temperature of the flue gas and air. The exchange time and process of heat exchange, so when the air is introduced into the heat exchange tank, the high-temperature flue gas can conduct sufficient heat exchange with the air, so that the temperature of the natural air can rise to a certain extent, and pass through the main air outlet pipe from the air outlet Entering into the air inlet of the kiln, the incoming air is preheated to achieve a reasonable utilization of resources.
烟气经过空冷之后再进入到水冷却装置中进行水冷，烟气通过水冷却装置筒体内的螺旋冷却管道的结构，与水进行充分的热交换，热交换后的水通过自冷却系统进行循环，保证冷却效果。After the flue gas is air-cooled, it enters the water cooling device for water cooling. The flue gas passes through the structure of the spiral cooling pipe in the cylinder of the water cooling device to fully exchange heat with the water. The water after heat exchange circulates through the self-cooling system. Guaranteed cooling effect.
综上，本申请解决了由于系统中熔化炉出来的烟气温度偏高，需采取降温措施，保证后续除尘脱硫系统达标排放的问题，采用空冷和水冷结合的方式，将进口高温烟气冷却到180℃以下，以便烟气进入后续除尘湿法脱硫塔进行脱硫处理，保证烟气达标排放，同时达到了热能的合理利用。In summary, this application solves the problem that due to the high temperature of the flue gas coming out of the melting furnace in the system, cooling measures need to be taken to ensure that the follow-up dust removal and desulfurization system meets the emission standards. Below 180 ℃, so that the flue gas enters the subsequent dedusting wet desulfurization tower for desulfurization treatment, ensuring that the flue gas meets the standard discharge, and at the same time achieves a reasonable use of heat energy.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109882880A (en) * | 2019-03-15 | 2019-06-14 | 北京中金泰达电液科技有限公司 | A kind of high-temperature flue gas cooling means for preventing dioxin from synthesizing again and device |
| CN112361832A (en) * | 2020-10-22 | 2021-02-12 | 瑞泰马钢新材料科技有限公司 | Flue gas cooling device and cooling method for sliding brick carbonization kiln |
| CN113975919A (en) * | 2021-09-30 | 2022-01-28 | 武汉悟拓科技有限公司 | Dry recovery process of chlorine components based on co-processing of chlorine-containing solid waste in cement kilns |
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| CN114835381A (en) * | 2022-06-21 | 2022-08-02 | 湖南邵虹特种玻璃股份有限公司 | Energy-saving glass kiln |
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