CN203737087U - Boiler tail flue gas compressing and centralized treating system - Google Patents
Boiler tail flue gas compressing and centralized treating system Download PDFInfo
- Publication number
- CN203737087U CN203737087U CN201320842937.4U CN201320842937U CN203737087U CN 203737087 U CN203737087 U CN 203737087U CN 201320842937 U CN201320842937 U CN 201320842937U CN 203737087 U CN203737087 U CN 203737087U
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- CN
- China
- Prior art keywords
- flue gas
- boiler tail
- tail flue
- air compressor
- processing system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000003546 flue gas Substances 0.000 title claims abstract description 86
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 84
- 238000007906 compression Methods 0.000 claims description 37
- 230000006835 compression Effects 0.000 claims description 36
- 239000002002 slurry Substances 0.000 claims description 27
- 239000003517 fume Substances 0.000 claims description 16
- 238000002156 mixing Methods 0.000 claims description 15
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims description 15
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 12
- 238000011084 recovery Methods 0.000 claims description 10
- 238000000926 separation method Methods 0.000 claims description 10
- 239000010440 gypsum Substances 0.000 claims description 6
- 229910052602 gypsum Inorganic materials 0.000 claims description 6
- 239000002808 molecular sieve Substances 0.000 claims description 6
- 238000004537 pulping Methods 0.000 claims description 5
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims description 5
- 238000005265 energy consumption Methods 0.000 abstract description 6
- 238000004064 recycling Methods 0.000 abstract 2
- 238000000034 method Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 7
- 239000000203 mixture Substances 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 235000019738 Limestone Nutrition 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000006028 limestone Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical group [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
Abstract
The utility model provides a boiler tail flue gas compressing and centralized treating system which comprises an air compressing system and a multistage treating system, wherein the air compressing system comprises a front air compressor, an energy recycling device and a rear air compressor, which are connected in sequence; the front air compressor is connected with raw flue gas; the rear air compressor is connected with an inlet of the multistage treating system; an outlet of the multistage treating system is connected with the energy recycling device. The boiler tail flue gas compressing and centralized treating system has the effect of reducing the total energy consumption and the system operating cost in the flue gas treatment while improving the flue gas removing efficiency.
Description
Technical field
The utility model belongs to flue gas processing technology field, is specifically related to a kind of boiler tail flue gas compression centralized processing system.
Background technology
China is that maximum countries is produced and used to world today's coal-burning boiler.The energy efficiency of coal-burning boiler and problem of environmental pollution are outstanding at present, and solving and processing coal-burning boiler tail flue gas is also the most important thing of control atmosphere pollution.Coal-burning boiler tail flue gas treatment technology, the treatment technologies such as the decarburization that mainly comprises denitrating flue gas (nitrogen), dedusting, desulfurization and in recent years start to develop, demercuration.Due to historical and policy aspect, above-mentioned every treatment technology progressively grows up, and forms separate module in function.Mainly there is following problem in current flue gas treatment technology: 1, construction cost is higher.Because each technology is separate, and be to process close under normal temperature and pressure, flue gas volume is larger, often carries out single treatment, and a set of complete, bulky treating apparatus will be set; 2, operating cost is higher.Because flue gas volume is larger, impurity density is lower, and intractability is relatively large, simultaneously because each system is independently, almost there is no shared device between each system, and its maintenance cost must be high; 3, energy consumption is high.Because each system is separate, energy consumption is inevitable high, in the time of to gas cleaning, easily environment is caused to secondary pollution; 4, space unreasonable allocation.Because system is independently, proprietor often calls for bid each functional module respectively with EPC form, finally by different contractors, completed.This must cause each functional module is spatially discontinuous each other, sometimes or even inharmonic.
Chinese patent 201320080029.6 discloses a kind of flue gas processing equipment of boiler, and its primary structure comprises getter case, gas-tpe fitting, steel wire, water tank, spray gun, air pump, fan.During use, air pump is constantly collected and delivered to boiler smoke, contacts reach dedusting and flue gas liquefaction object by air pump after compressing with water.Although this flue gas processing equipment of boiler had carried out compression to flue gas before carrying out flue gas water treatment, process, its former contracting equipment adopting is air pump, and the compression ratio of air pump is larger, but flow is less, can not meet the tail gas discharge capacity requirement of current large-sized boiler; And this treating apparatus directly compression to flue gas energy consumption, be huge, for the boiler of larger evaporation capacity, substantially unrealistic.
Utility model content
For the problems referred to above, the purpose of this utility model is to provide a kind of boiler tail flue gas compression centralized processing system, and this system, when improving flue gas removal efficiency, has reduced the total energy consumption during flue gas is processed, and system operation cost.
For achieving the above object, the utility model adopts following technical scheme:
A kind of boiler tail flue gas compression centralized processing system, it is characterized in that, comprise: air compression system and multistep treatment system, described air compression system comprises preposition air compressor, energy recycle device and the rearmounted air compressor connecting successively, described preposition air compressor is connected with boiler tail flue gas outlet, described rearmounted air compressor is connected with the entrance of described multistep treatment system, and the outlet of described multistep treatment system is connected with described energy recycle device.
Further, described energy recycle device comprises pressure recovery device and heat reclaim unit, and described pressure recovery device and described heat reclaim unit comprise respectively former fume side and clean fume side.
Further, the clean fume side of described heat reclaim unit is heat riser, and the clean fume side of described pressure recovery device is dropping equipment, and described heat riser and described dropping equipment form the intensification dropping equipment of described energy recycle device.
Further, described intensification dropping equipment outlet is communicated with chimney.
Further, described preposition air compressor and rearmounted air compressor are high pressure positive blower.
Further, described multistep treatment system comprises activated carbon treatment apparatus, molecular sieve treating apparatus, slurries treating apparatus and decompose nitrogen oxides device.
Further, described slurries treating apparatus comprises pulping device, flue gas slurries mixing arrangement, coiled pipe mixing arrangement and flue gas slurries separator.
Further, described coiled pipe mixing arrangement comprises riffled tube.
Further, the outlet of described flue gas slurries separator is connected with gypsum dewatering equipment and CO
2separation and compression set.
When the utility model is used, by air compression system, the former flue gas of high-temperature low-pressure is carried out to cooling and compression, its volume is reduced, final compression ratio is about 5%-25%, and compression process adopts energy recycle device, to reduce energy consumption.
Energy recycle device in the utility model be by the clean flue gas of high pressure by multistage mode, step by step pressure is passed to the former flue gas of low pressure, make former flue gas only need less energy supplement can realize larger compression ratio, realize pressure recovery; Meanwhile, utilize the clean flue gas of high-temperature heating (utilizing in other words the former flue gas of the clean flue gas cooling down high-temperature of normal temperature) of former flue gas, realize heat recovery.
The former flue gas of high pressure after cooling and compression is processed, process multistep treatment system: can nuisance be decomposed, be filtered and collect by devices such as activated carbon, molecular sieve, coiled pipe mixing arrangement, decompose nitrogen oxides devices, thereby remove CO
2, SO
x, NO
x, mercury and dust etc., wherein coiled pipe mixing arrangement, can make gas-liquid mixture fully stir, and has guaranteed that slurries fully absorb nuisance; In order to coordinate pressure recovery, need to utilize the intensification dropping equipment of the clean fume side of energy recycle device to heat up to the clean flue gas after multistep treatment, the process that clean flue gas heats up, it is exactly the process of former flue gas cool-down, the process of clean flue gas step-down, the process that namely former flue gas boosts, the flue gas pressures after intensification further raises, after energy recycle device, pressure is passed to former flue gas.
Accompanying drawing explanation
Fig. 1 is the utility model boiler tail flue gas compression centralized processing system schematic diagram.
Fig. 2 is the utility model energy recycle device schematic diagram.
Wherein, 1-preposition air compressor; 2-rearmounted air compressor; 3-energy recycle device; 31-heat exchanger; 32-pressure exchanger; 4-activated carbon treatment apparatus; 5-molecular sieve treating apparatus; 6-oxidation fan; 7-pulping device; 8-flue gas slurries mixing arrangement; 9-coiled pipe mixing arrangement; 10-flue gas slurries separator; 11-CO
2separation and compression set; 12-Separation of gypsum device; 13 decompose nitrogen oxides devices.
The specific embodiment
A boiler tail flue gas compression centralized processing system, as shown in Figure 1.Comprise: air compression system and multistep treatment system, air compression system comprises again preposition air compressor 1, energy recycle device 3 and the rearmounted air compressor 2 connecting successively, energy recycle device 3 comprises the intensification dropping equipment that is positioned at its clean fume side, preposition air compressor 1 is connected with boiler tail flue gas (former flue gas) outlet, rearmounted air compressor 2 is connected with the entrance of multistep treatment system, and the outlet of multistep treatment system is connected with the entrance of intensification dropping equipment.
Intensification dropping equipment is communicated with chimney, and the clean flue gas after processing is discharged.
The utility model energy recycle device 3 as shown in Figure 2, comprises that again heat reclaim unit is that heat exchanger 31 and pressure recovery device are pressure exchanger 32.
Heat exchanger 31 and pressure exchanger 32 comprise respectively former fume side and clean fume side.The clean fume side of heat exchanger 31 forms the heat riser in energy recycle device 3, and the clean fume side of pressure exchanger 32 forms the dropping equipment in energy recycle device 3; Heat riser and dropping equipment form the intensification dropping equipment of energy recycle device 3 jointly.
Preposition air compressor 1 and rearmounted air compressor 2 that the utility model adopts are high pressure positive blower, can meet compression ratio requirement, can meet traffic requirement again.
Multistep treatment system mainly comprises activated carbon treatment apparatus 4, molecular sieve treating apparatus 5, slurries treating apparatus, also can comprise other treatment system.Slurries treating apparatus comprises that again pulping device 7, flue gas slurries mixing arrangement 8(major function are that flue gas is fully mixed with slurries, generates gas-liquid mixture), coiled pipe mixing arrangement 9, flue gas slurries separator 10.
The outlet of flue gas slurries separator 10 is connected with CO
2separation and compression set 11, CO
2separation and compression set 11 can also be connected with Separation of gypsum device 11.
The flow through route of the utility model boiler tail flue gas compression centralized processing system of boiler tail flue gas is: the former fume side of boiler tail flue gas outlet → preposition air compressor 1 → energy recycle device 3 → rearmounted air compressor 2 → multistep treatment system → energy recycle device 3 clean fume side → chimneys (atmosphere).
Particularly, in use, after the former flue gas of low pressure that boiler tail is discharged is compressed by preposition air compressor 1, enter energy recycle device 3, this device comprises multistage pressure retracting device and multistage heat reclaim unit, and the clean flue gas of treated high pressure, by multistage mode, passes to pressure the former flue gas of low pressure step by step, make the former flue gas of low pressure only need less energy supplement can realize larger compression ratio, through rearmounted air compressor 2, further after compression, become the former flue gas of high pressure.
Flue gas focuses under compressive state, every coagulation may be one or more oxious components.The former flue gas of high pressure enters flue gas slurries mixing arrangement 8 after activated carbon treatment apparatus 4 and molecular sieve device 5 stepwise disposals, simultaneously, the lime stone slurry of being prepared by pulping device 7 is added in flue gas slurries mixing arrangement 8, and by oxidation fan 6, pass into air and mix, mixed reactant enters in coiled pipe mixing arrangement 9, and this device can guarantee that lime stone slurry fully contacts and reacts with the mixture of flue gas.
Then, slurries after abundant hybrid reaction enter flue gas slurries separator 10 and carry out separation, the clean flue gas of high pressure is passed in energy recycle device 3, utilizes intensification dropping equipment to realize energy and reclaims, and the final clean flue gas of low pressure producing can directly be discharged in atmosphere by exhanst gas outlet; Sulfur-bearing slurries enter CO
2separation and compression set 11, process the CO obtaining through this device
2can tinning and transportation, remaining slurries enters Separation of gypsum device 12, and the gypsum obtaining can directly be discharged, and waste water is disposed to effluent treatment plant.
In addition, in the utility model, the clean flue gas of cryogenic high pressure is after the heat exchanger 31 through energy recycle device 3, turn back to the decompose nitrogen oxides device 13 of multistep treatment system, complete after decomposition, the pressure exchanger 32 that again returns to energy recycle device 3 is discharged to atmosphere by chimney after pressure-exchange.
Claims (9)
1. a boiler tail flue gas compresses centralized processing system, it is characterized in that, comprise: air compression system and multistep treatment system, described air compression system comprises preposition air compressor, energy recycle device and the rearmounted air compressor connecting successively, described preposition air compressor is connected with boiler tail flue gas outlet, described rearmounted air compressor is connected with the entrance of described multistep treatment system, and the outlet of described multistep treatment system is connected with described energy recycle device.
2. boiler tail flue gas according to claim 1 compresses centralized processing system, it is characterized in that, described energy recycle device comprises pressure recovery device and heat reclaim unit, and described pressure recovery device and described heat reclaim unit comprise respectively former fume side and clean fume side.
3. boiler tail flue gas according to claim 2 compresses centralized processing system, it is characterized in that, the clean fume side of described heat reclaim unit is heat riser, the clean fume side of described pressure recovery device is dropping equipment, and described heat riser and described dropping equipment form the intensification dropping equipment of described energy recycle device.
4. boiler tail flue gas compression centralized processing system according to claim 3, is characterized in that, described intensification dropping equipment outlet is communicated with chimney.
5. boiler tail flue gas compression centralized processing system according to claim 1, is characterized in that, described preposition air compressor and rearmounted air compressor are high pressure positive blower.
6. boiler tail flue gas compression centralized processing system according to claim 1, is characterized in that, described multistep treatment system comprises activated carbon treatment apparatus, molecular sieve treating apparatus, slurries treating apparatus and decompose nitrogen oxides device.
7. boiler tail flue gas compression centralized processing system according to claim 6, is characterized in that, described slurries treating apparatus comprises pulping device, flue gas slurries mixing arrangement, coiled pipe mixing arrangement and flue gas slurries separator.
8. boiler tail flue gas compression centralized processing system according to claim 7, is characterized in that, described coiled pipe mixing arrangement comprises riffled tube.
9. boiler tail flue gas compression centralized processing system according to claim 7, is characterized in that, the outlet of described flue gas slurries separator is connected with gypsum dewatering equipment and CO
2separation and compression set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320842937.4U CN203737087U (en) | 2013-12-19 | 2013-12-19 | Boiler tail flue gas compressing and centralized treating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320842937.4U CN203737087U (en) | 2013-12-19 | 2013-12-19 | Boiler tail flue gas compressing and centralized treating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203737087U true CN203737087U (en) | 2014-07-30 |
Family
ID=51336952
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320842937.4U Expired - Fee Related CN203737087U (en) | 2013-12-19 | 2013-12-19 | Boiler tail flue gas compressing and centralized treating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203737087U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108982278A (en) * | 2018-07-26 | 2018-12-11 | 山东大学 | A kind of coke breeze absorption sulfur dioxide/HCl method of evaluating performance based on air flow bed |
| CN110152444A (en) * | 2018-02-07 | 2019-08-23 | 彭万喜 | A method of pernicious gas is handled using high-efficiency adsorbent |
-
2013
- 2013-12-19 CN CN201320842937.4U patent/CN203737087U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110152444A (en) * | 2018-02-07 | 2019-08-23 | 彭万喜 | A method of pernicious gas is handled using high-efficiency adsorbent |
| CN108982278A (en) * | 2018-07-26 | 2018-12-11 | 山东大学 | A kind of coke breeze absorption sulfur dioxide/HCl method of evaluating performance based on air flow bed |
| CN108982278B (en) * | 2018-07-26 | 2020-05-08 | 山东大学 | Evaluation method for sulfur dioxide/HCl adsorption performance of coke breeze based on entrained flow bed |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100097 Beijing Haidian District Zizhuyuan Road No. 120 Patentee after: DATANG ENVIRONMENT INDUSTRY GROUP Co.,Ltd. Address before: 100097 Beijing Haidian District Zizhuyuan Road No. 120 Patentee before: DATANG TECHNOLOGY INDUSTRY GROUP CO.,LTD. Address after: 100097 Beijing Haidian District Zizhuyuan Road No. 120 Patentee after: DATANG TECHNOLOGY INDUSTRY GROUP CO.,LTD. Address before: 100097 Beijing Haidian District Zizhuyuan Road No. 120 Patentee before: DATANG TECHNOLOGY INDUSTRY Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140730 |