CN107559863A - An integrated device coupling flue gas purification and waste heat recovery - Google Patents
An integrated device coupling flue gas purification and waste heat recovery Download PDFInfo
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- CN107559863A CN107559863A CN201711023988.3A CN201711023988A CN107559863A CN 107559863 A CN107559863 A CN 107559863A CN 201711023988 A CN201711023988 A CN 201711023988A CN 107559863 A CN107559863 A CN 107559863A
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- 239000002918 waste heat Substances 0.000 title claims abstract description 26
- 238000011084 recovery Methods 0.000 title claims abstract description 18
- 238000000746 purification Methods 0.000 title claims abstract description 15
- 230000008878 coupling Effects 0.000 title claims abstract description 14
- 238000010168 coupling process Methods 0.000 title claims abstract description 14
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 14
- 239000003546 flue gas Substances 0.000 title abstract description 30
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 85
- 239000007789 gas Substances 0.000 claims abstract description 12
- 238000004140 cleaning Methods 0.000 claims abstract 8
- 239000003517 fume Substances 0.000 claims abstract 3
- 239000008213 purified water Substances 0.000 claims description 9
- 239000000779 smoke Substances 0.000 claims description 5
- 239000000945 filler Substances 0.000 claims 2
- 230000000740 bleeding effect Effects 0.000 claims 1
- 230000037452 priming Effects 0.000 claims 1
- 239000000428 dust Substances 0.000 abstract description 7
- 239000002253 acid Substances 0.000 description 4
- 239000003245 coal Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002802 bituminous coal Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000012717 electrostatic precipitator Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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- Chimneys And Flues (AREA)
Abstract
Description
技术领域technical field
本发明属于工业和电站锅炉余热利用技术领域，具体涉及一种耦合烟气净化和余热回收的集成装置。The invention belongs to the technical field of industrial and power plant boiler waste heat utilization, and in particular relates to an integrated device coupling flue gas purification and waste heat recovery.
背景技术Background technique
电站和工业锅炉通过燃烧方式将燃料化学能转化为工质热能，并将燃烧产物烟气排放进入大气环境中。目前，电站和工业锅炉已经广泛应用于供暖、电力、煤化工等行业中。为了避免低温酸腐蚀，这些锅炉的排烟温度约为150℃。同时，烟气中还携带有大量微细颗粒物。将这些烟气直接排放入大气中，不仅会造成空气质量下降，还会浪费大量烟气余热。例如，在2015年，我国全社会用电量为55500亿千瓦时，按照1千瓦时平均煤耗300g的II类烟煤，实际排烟量为2.5m3/kg。因此，2015年全社会总排烟量为1.388×1013m3/h，若取排烟温度为150℃，余热利用后烟气温度降低为60℃，可以回收的低温余热约1.2×109GJ，将带来可观的经济收益。Power plants and industrial boilers convert the chemical energy of fuel into thermal energy of working fluid through combustion, and discharge the flue gas of combustion products into the atmosphere. At present, power stations and industrial boilers have been widely used in heating, electric power, coal chemical industry and other industries. To avoid low-temperature acid corrosion, the exhaust gas temperature of these boilers is about 150°C. At the same time, the flue gas also carries a large number of fine particles. Discharging these flue gases directly into the atmosphere will not only cause air quality degradation, but also waste a lot of waste heat of the flue gas. For example, in 2015, the electricity consumption of the whole society in China was 5.55 trillion kWh. According to the average coal consumption of 1 kWh of Class II bituminous coal of 300g, the actual smoke emission is 2.5m 3 /kg. Therefore, the total smoke emission of the whole society in 2015 was 1.388×10 13 m 3 /h. If the exhaust gas temperature is taken as 150°C, the temperature of the flue gas will be reduced to 60°C after waste heat utilization, and the low-temperature waste heat that can be recovered is about 1.2×10 9 GJ, will bring considerable economic benefits.
尽管现有锅炉绝大部分已安装有除尘装置，如袋式除尘器、静电除尘器、湿式除尘器等等，然而，这些除尘装置对排入大气中的烟气余热基本不予考虑回收利用。Although most of the existing boilers have been equipped with dust removal devices, such as bag filter, electrostatic precipitator, wet dust collector, etc., however, these dust removal devices basically do not consider recycling the waste heat of the flue gas discharged into the atmosphere.
发明内容Contents of the invention
为了克服上述现有技术存在的缺陷，本发明的目的在于提供一种耦合烟气净化和余热回收的集成装置，该装置结构简单紧凑，安全可靠，节能环保。In order to overcome the above-mentioned defects in the prior art, the object of the present invention is to provide an integrated device coupling flue gas purification and waste heat recovery. The device has a simple and compact structure, is safe and reliable, and is energy-saving and environment-friendly.
本发明是通过以下技术方案来实现：The present invention is realized through the following technical solutions:
一种耦合烟气净化和余热回收的集成装置，包括套管及穿设在套管内的内管，还包括与内管连通的净化水回路以及与套管连通的热水回路，净化水回路的进水口连接至内管底部，出水口连接至内管顶部，热水回路的进水口连接至套管底部，出水口连接至套管顶部；An integrated device for coupling flue gas purification and waste heat recovery, including a casing and an inner tube pierced in the casing, a purified water circuit connected to the inner tube and a hot water circuit connected to the casing, the purified water circuit The water inlet is connected to the bottom of the inner pipe, the water outlet is connected to the top of the inner pipe, the water inlet of the hot water circuit is connected to the bottom of the casing, and the water outlet is connected to the top of the casing;
在内管中还插设有螺旋微孔管，螺旋微孔管的上端设有能够伸出内管的烟气管，下端设有能够伸出内管的弯管。A spiral microporous pipe is also inserted in the inner pipe, the upper end of the spiral microporous pipe is provided with a flue gas pipe which can protrude from the inner pipe, and the lower end is provided with an elbow which can protrude from the inner pipe.
优选地，所述弯管上设有排气管和出水管，在排气管上设有排气阀，在出水管上设有出水阀。Preferably, an exhaust pipe and a water outlet pipe are provided on the elbow, an exhaust valve is provided on the exhaust pipe, and a water outlet valve is provided on the water outlet pipe.
优选地，净化水回路上设有净水阀和第一循环泵。Preferably, a water purification valve and a first circulation pump are provided on the purified water circuit.
优选地，在净化水回路上还设有加水管，加水管上设有加水阀。Preferably, a water supply pipe is also provided on the purified water circuit, and a water supply valve is provided on the water supply pipe.
优选地，热水回路上设有热水阀和第二循环泵。Preferably, a hot water valve and a second circulation pump are provided on the hot water circuit.
优选地，在热水回路上还设有出热水管，出热水管上设有出热水阀和温控器。Preferably, a hot water outlet pipe is also provided on the hot water circuit, and a hot water outlet valve and a temperature controller are arranged on the hot water outlet pipe.
优选地，烟气管上还设有烟气阀。Preferably, a smoke valve is also provided on the smoke pipe.
与现有技术相比，本发明具有以下有益的技术效果：Compared with the prior art, the present invention has the following beneficial technical effects:
本发明公开的耦合烟气净化和余热回收的集成装置，在设置在套管中的内管中插有螺旋微孔管，烟气自上而下流过螺旋微孔管，与从微孔射入内管中的水柱碰撞混合，烟气中的灰尘被洗去，酸性气体和水混合，烟气被净化。在套管内通有与烟气逆流的循环冷却水，吸收烟气余热后，温度升高，并与套管中通入的逆流循环水发生热交换而温度升高，从而使烟气余热被利用。通过调节套管和内管中的循环水流速，可以提高烟气余热回收效率，并减少除尘装置的大小。该装置结构简单紧凑，使用便捷，节能环保，操作安全可靠。In the integrated device for coupling flue gas purification and waste heat recovery disclosed by the present invention, a spiral microporous tube is inserted in the inner tube arranged in the casing, the flue gas flows through the spiral microporous tube from top to bottom, and is injected into the The water column in the inner pipe collides and mixes, the dust in the flue gas is washed away, the acid gas and water mix, and the flue gas is purified. There is circulating cooling water countercurrent to the flue gas in the casing. After absorbing the waste heat of the flue gas, the temperature rises, and heat exchange occurs with the countercurrent circulating water passed into the casing to increase the temperature, so that the waste heat of the flue gas can be utilized. . By adjusting the flow rate of circulating water in the casing and inner pipe, the efficiency of flue gas waste heat recovery can be improved and the size of the dust removal device can be reduced. The device has the advantages of simple and compact structure, convenient use, energy saving and environmental protection, and safe and reliable operation.
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.
其中：1为烟气管；2为烟气阀；3为螺旋微孔管；4为内管；5为热水回路；6为套管；7为热水阀；8为第二循环泵；9为净化水回路；10为净水阀；11为第一循环泵；12为弯管；13为出水管；14为出水阀；15为排气阀；16为排气管；17为加水管；18为加水阀；19为温控器；20为热水管；21为出热水阀。Among them: 1 is the flue gas pipe; 2 is the flue gas valve; 3 is the spiral microporous pipe; 4 is the inner pipe; 5 is the hot water circuit; 6 is the casing; 7 is the hot water valve; 8 is the second circulation pump; 9 is the purified water circuit; 10 is the water purification valve; 11 is the first circulation pump; 12 is the elbow; 13 is the outlet pipe; 14 is the water outlet valve; 15 is the exhaust valve; 16 is the exhaust pipe; 17 is the water pipe 18 is a water adding valve; 19 is a thermostat; 20 is a hot water pipe; 21 is a hot water outlet valve.
具体实施方式detailed description
下面结合附图对本发明做进一步详细描述：The present invention is described in further detail below in conjunction with accompanying drawing:
参见图1，本发明公开的耦合烟气净化和余热回收的集成装置，包括：内管4，在内管4的外部安装有套管6。在内管4中央插有螺旋微孔管3，它的上部安装有烟气管1，在烟气管1上安装有烟气阀2。在螺旋微孔管3的下方安装有弯管12，在弯管12上方安装有排气管16和排气阀15，在弯管12的下方安装有出水管13和出水阀14。在内管4上、下端与净化回路9连接，在该净化水回路9上安装有净水阀10和第一循环泵11。在净化水回路9的上方安装有加水管17和加水阀18。在套管6的上、下端与热水回路5相连，在热水回路5上安装有热水阀7和第二循环水泵8，以及出热水管20。在出热水管20上安装有温控器19和出热水阀21。Referring to FIG. 1 , the integrated device for coupling flue gas purification and waste heat recovery disclosed by the present invention includes: an inner pipe 4 , and a casing 6 is installed outside the inner pipe 4 . A spiral microporous pipe 3 is inserted in the center of the inner pipe 4, and a flue gas pipe 1 is installed on its upper part, and a flue gas valve 2 is installed on the flue gas pipe 1. An elbow 12 is installed below the spiral microporous pipe 3 , an exhaust pipe 16 and an exhaust valve 15 are installed above the elbow 12 , and an outlet pipe 13 and an outlet valve 14 are installed below the elbow 12 . The upper and lower ends of the inner pipe 4 are connected to a purification circuit 9 , and a water purification valve 10 and a first circulating pump 11 are installed on the purified water circuit 9 . A water adding pipe 17 and a water adding valve 18 are installed above the purified water circuit 9 . The upper and lower ends of the sleeve pipe 6 are connected to the hot water circuit 5 , and a hot water valve 7 , a second circulating water pump 8 , and a hot water outlet pipe 20 are installed on the hot water circuit 5 . A thermostat 19 and a hot water valve 21 are installed on the hot water outlet pipe 20 .
本发明的耦合烟气净化和余热回收的集成装置，在工作时：The integrated device coupling flue gas purification and waste heat recovery of the present invention, when working:
内管4与净化回路9构成水循环回路，通过加装的第一循环泵11为内管4输送高速循环水。在内管4中插设有螺旋微孔管3，烟气从螺旋微孔管3上部的烟气管2流过螺旋微孔管3，在该管中与入射水柱发生混合碰撞后，溶有酸性气体和尘粒的水从该管下方安装的弯管12流出，并从出水管13中排向环境。The inner pipe 4 and the purification circuit 9 form a water circulation circuit, and the inner pipe 4 is delivered high-speed circulating water through the installed first circulation pump 11 . A spiral microporous pipe 3 is inserted in the inner pipe 4, and the flue gas flows through the spiral microporous pipe 3 from the flue gas pipe 2 on the upper part of the spiral microporous pipe 3. After mixing and colliding with the incident water column in the pipe, dissolved The water of acid gas and dust particles flows out from the elbow 12 installed below the pipe and is discharged to the environment from the outlet pipe 13 .
套管6与热水回路5连接构成烟气余热回收的水循环回路，在该回路上安装有出热水管20，在该管上还安装有温控器19和出热水阀21。设置温控器19的参数可在合适的时间取用规定温度的热水。由于内管4中的部分水要从螺旋微孔管3中的微孔流走并被弯管12和出水管13引向环境，所损失的水可由净化水回路9上安装的加水管17补加。为了防止酸腐蚀，内管4、螺旋微孔管3、弯管12和出热水管20与水相接触的表面镀铬。The sleeve pipe 6 is connected with the hot water circuit 5 to form a water circulation circuit for waste heat recovery of flue gas. A hot water outlet pipe 20 is installed on the circuit, and a temperature controller 19 and a hot water outlet valve 21 are also installed on the pipe. The parameter setting thermostat 19 can take the hot water of prescribed temperature at suitable time. Because part of the water in the inner pipe 4 will flow away from the micropores in the spiral microporous pipe 3 and be led to the environment by the elbow 12 and the outlet pipe 13, the lost water can be replenished by the water supply pipe 17 installed on the purified water circuit 9 add. In order to prevent acid corrosion, the surfaces of the inner pipe 4, the spiral microporous pipe 3, the elbow pipe 12 and the hot water outlet pipe 20 in contact with the water are plated with chrome.
Claims (7)
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711023988.3A CN107559863A (en) | 2017-10-27 | 2017-10-27 | An integrated device coupling flue gas purification and waste heat recovery |
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| CN201711023988.3A CN107559863A (en) | 2017-10-27 | 2017-10-27 | An integrated device coupling flue gas purification and waste heat recovery |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108397787A (en) * | 2018-02-09 | 2018-08-14 | 林文华 | It is a kind of that flue gas is received into water and the flue gas purification system of heat recovery |
| CN108397786A (en) * | 2018-02-09 | 2018-08-14 | 林文华 | A kind of flue gas purification system of waste heat recoverable |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204359146U (en) * | 2014-12-18 | 2015-05-27 | 榆林学院 | A kind of flue gas ash removal waste heat recovery set composite |
| CN204460257U (en) * | 2015-03-16 | 2015-07-08 | 周传勇 | A kind of boiler smoke udst separation residual heat using device |
| CN108317535A (en) * | 2017-01-18 | 2018-07-24 | 榆林学院 | A kind of integrating device of coupling gas cleaning and waste heat recovery |
-
2017
- 2017-10-27 CN CN201711023988.3A patent/CN107559863A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204359146U (en) * | 2014-12-18 | 2015-05-27 | 榆林学院 | A kind of flue gas ash removal waste heat recovery set composite |
| CN204460257U (en) * | 2015-03-16 | 2015-07-08 | 周传勇 | A kind of boiler smoke udst separation residual heat using device |
| CN108317535A (en) * | 2017-01-18 | 2018-07-24 | 榆林学院 | A kind of integrating device of coupling gas cleaning and waste heat recovery |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108397787A (en) * | 2018-02-09 | 2018-08-14 | 林文华 | It is a kind of that flue gas is received into water and the flue gas purification system of heat recovery |
| CN108397786A (en) * | 2018-02-09 | 2018-08-14 | 林文华 | A kind of flue gas purification system of waste heat recoverable |
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Application publication date: 20180109 |