CN203836997U - Various-contaminant high-efficiency cooperative removing integrated system - Google Patents
Various-contaminant high-efficiency cooperative removing integrated system Download PDFInfo
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- CN203836997U CN203836997U CN201420229611.9U CN201420229611U CN203836997U CN 203836997 U CN203836997 U CN 203836997U CN 201420229611 U CN201420229611 U CN 201420229611U CN 203836997 U CN203836997 U CN 203836997U
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Abstract
The utility model relates to a various-contaminant high-efficiency cooperative removing integrated system. The emission values of main smoke contaminants such as smoke, SO2, NOX, mercury and SO3 are lowered, and the requirement of the fuel gas unit emission standard is met. According to the technical scheme, the system comprises an SCR reactor, low-low-temperature dust removing equipment, a desulfurizing absorption tower and a wet type electrostatic dust removing device, an inlet of the SCR reactor is connected with a boiler tail portion smoke channel smoke outlet after low-nitrogen combustion transforming, SCR denitration catalysts are modified catalysts which can improve the performance for oxidizing elemental mercury, an inlet of the low-low-temperature dust removing equipment is connected with an outlet of the SCR reactor, the low-low-temperature dust removing equipment is used for dust removing and SO3 removing, an inlet of the desulfurizing absorption tower is connected with an outlet of the low-low-temperature dust removing equipment, the desulfurizing absorption tower is used for desulfurizing and dust removing, an inlet of the wet type electrostatic dust removing device is connected with an outlet of the desulfurizing absorption tower, an outlet of the wet type electrostatic dust removing device is connected to a chimney through temperature rising equipment, and the wet type electrostatic dust removing device is used for dust removing and removing of gypsum fogdrop, mercury and SO3. The various-contaminant high-efficiency cooperative removing integrated system is used in the field of atmospheric pollution prevention.
Description
Technical field
The utility model relates to the efficient cooperation-removal integrated system of multiple pollutant, is mainly applicable to atmosphere polluting controling technology field.
Background technology
The Energy Situation of China exists triple burden, be the pressure of demand for energy sustainable growth, the pressure that in using energy source, environmental requirement improves constantly and the pressure of the energy safety of supply, how in this triple burden, finding equalization point, rationally jointly dealing with problems is suitably a very urgent and necessary job.
China take coal and is that main energy consumption structure will be difficult to essence and change within quite long one period in future.And a large amount of flue dust that coal produces in combustion process, sulfur dioxide (SO
2), nitrogen oxide (NO
x) and the multiple pollutant such as heavy metal, be also fine particulates (PM
2.5) and precursor as SO
2, NO
xetc. one of main source of atmosphere pollution, these pollutants are to environment and the public is healthy a serious threat.
By the end of the year 2012, approximately 18.55 hundred million tons, China coal-burning power plant consumption coal, accounts for 52.8% of national consumption of coal total amount, is the first consumption coal rich and influential family.In September, 2011; Environmental Protection Department and State Administration for Quality Supervision and Inspection and Quarantine combine and have issued < < fossil-fuel power plant atmospheric pollutant emission standard > > (GB13223-2011) the tightest in history; requirement to 2014 year July, coal-burning boiler will reach: mercury and mercuric compounds 0.03mg/Nm
3, flue dust 30mg/Nm
3, sulfur dioxide 200 (existing unit)/100 (new-built unit) mg/Nm
3, nitrogen oxide 100mg/Nm
3discharge standard; Wherein the discharge standard of key area is flue dust 20mg/Nm
3, sulfur dioxide 50mg/Nm
3, the environmental protection pressure of coal-fired unit further strengthens.
Smoke abatement, SO
2, NO
xetc. the H mentioning in main flue gas pollutant and new standard
goutside, SO
3the pollutant that this concentration is less has also caused that people extensively pay attention to, SO
3have corrosivity, not only to environment, the safe operation of Ye Gei power plant has brought very large hidden danger, SO in the fume emission of coal-burning power plant
3though concentration is low, the absolute magnitude of discharge is larger, very important, and the discharge standard that the U.S. is existing relevant is put into effect, and the tightest state standard is 0.6mg/Nm
3, and China does not have relevant criterion yet.
The energy resource structure of China has determined take that coal is that the electricity industry structure general layout of leading is difficult to change in a short time, coal-fired unit is the most safe and reliable current generating approach, and China's economic development is rapid, electricity needs is powerful, to address these problems simultaneously and can only make the coal-fired cleaned centralized consumption efficiently of electric power and processing, multiple pollutant to coal-fired unit further removes, and makes its emission level that reaches gas turbine group, can solve above-mentioned triple burden simultaneously.
Summary of the invention
The technical problems to be solved in the utility model is: the problem for above-mentioned existence provides one kind of multiple pollutants efficient cooperation-removal integrated system, multiple pollutant is removed to technology and carry out integrated and put forward effect, to reach effective reduction flue dust (containing PM2.5), SO
2, NO
x, mercury and SO
3etc. main flue gas pollutant emission value, and make it reach the object of combustion gas unit discharge standard.
The technical scheme that the utility model adopts is: the efficient cooperation-removal integrated system of multiple pollutant, is characterized in that it comprises:
SCR reactor, its entrance is connected with the outlet flue through the improved boiler back end ductwork of low nitrogen burning, and SCR denitrating catalyst adopts can improve the modified catalyst to the oxidation susceptibility of nonvalent mercury;
Low temperature cleaner, its entrance is connected with the outlet of SCR reactor, for dedusting with remove SO
3;
Desulfuration absorbing tower, its entrance is connected with the outlet of low temperature cleaner, for desulfurization and dedusting;
Wet cottrell, its entrance is connected with the outlet of desulfuration absorbing tower, and outlet is connected to chimney through heating device, for dedusting, removes gypsum droplet, mercury and SO
3.
Described low temperature cleaner comprises pipe heat exchanger and low low temp. electric deduster, and wherein the entrance of pipe heat exchanger temperature descending section is connected with SCR reactor outlet, and outlet is connected with low low temp. electric deduster entrance.
Described heating device is the intensification section of pipe heat exchanger.
The beneficial effects of the utility model are: 1, the utility model is optimized SCR reactor, low temperature cleaner, desulfuration absorbing tower and wet cottrell and arrangement optimization carries out organic combination by pipeline, when improving the pollutant removing efficiency of every technology self, also make the pollutant removing efficiency of this technology Based on Integrate System reach a new high degree, can make that multiple major pollutants are disposable to be removed, reach the discharge standard of Natural Gas wheel unit: dust concentration discharges lower than 5mg/Nm
3, SO
2concentration of emission is lower than 35mg/Nm
3, NO
xconcentration of emission is lower than 45mg/Nm
3requirement, realize H simultaneously
gconcentration of emission is less than 0.003mg/Nm
3(be only national standard 1/10th), SO
3concentration of emission is lower than 5mg/Nm
3(the domestic standard that there is no), and realize full load put into operation denitration, elimination " white cigarette " and gypsum rain etc.2, warm a plurality of equipment, by equipment, integrate, improve compatibility and matching degree between each equipment, other equipment add the efficiency that can improve individual equipment, also make individual equipment issuable side effect when removing pollution to be eliminated by other equipment, as the SO that in SCR reactor, oxidation generates
3can be removed by low temperature cleaner and wet cottrell, the gypsum drop of taking out of in desulfuration absorbing tower can be removed by the wet electrical dust precipitator in downstream etc., prevent foreseeable multiple side effect, improve equipment safety in operation and life-span, realize real pollutant minimum discharge.3, by rational sequence arrangement and layout, optimize pipeline planning and be connected, make each equipment organic warm, improve whole efficiency, and reduced operating cost, as improvement project operating cost 0.015 yuan/kwh only, new construction operating cost is 0.01 yuan/kwh only.4, general main certain pollutant that removes of each equipment, can remove other pollutants to a certain extent simultaneously, the utility model is by organic combination, overall planning and the arrangement optimization of equipment, the remove ratio of reasonable distribution distinct device to same pollutant, reaches maximum pollutant removing effect with minimum cost.5, utilize the utility model can disposablely remove multiple pollutant, compared to carrying out repeatedly removing engineering construction for single kind pollutant, will save cost of investment and engineering time, and can make overall planning and reduce occupation of land space.6, applicable to all kinds of coal-fired units, can adjust accordingly according to unit situation and requirement (order of connection that reduces number of devices or change equipment), reach optimum efficiency, adaptability is wider.7, adopt efficient tube type heat exchanger, utilize its temperature descending section to lower the temperature to the flue gas entering in low cold precipitator, utilize its section that heats up to heat up to the flue gas of wet cottrell output, simplify the structure, improved efficiency simultaneously.
Accompanying drawing explanation
Fig. 1 is structure diagram of the present utility model.
The specific embodiment
Organically blended for the first time advanced technology of the denitration of main flow in the world, desulfurization, dedusting and de-trace contaminant of the utility model, between several technology, matching and warm property are good, can cooperatively interact and the efficient cooperation-removal integrated system of multiple pollutant of organic warm one-tenth, and propose innovatively to utilize this system to make coal-burning power plant's major pollutants reach the discharge standard of gas turbine group.
As shown in Figure 1, the present embodiment system comprises:
SCR reactor 1, its entrance is connected with the outlet flue of boiler 5 back-end ductworks; Wherein boiler 5, through low nitrogen burning transformation, in conjunction with SCR (SCR) denitration technology, reaches more than 90% the denitration efficiency of whole system; In addition, SCR denitrating catalyst is carried out to modification, oxidizing zero-valence mercury, the demercuration efficiency of raising upstream device;
Low temperature cleaner 2, comprises efficient tube type heat exchanger 2-1 and low low temp. electric deduster 2-2, and uses high frequency electric source, and wherein the entrance of efficient tube type heat exchanger 2-1 temperature descending section is connected with 1 outlet of SCR reactor, and outlet is connected with low low temp. electric deduster 2-2 entrance.This equipment efficiency of dust collection is high, and power consumption and operating cost are low, and efficiency of dust collection can reach more than 99.9%, SO
3removal efficiency can reach more than 80%;
Desulfuration absorbing tower 3, its entrance is connected with the outlet of low low temp. electric deduster 2-2, for desulfurization and dedusting; The present embodiment carries out desulfurization by modes such as increase current-sharing synergy dish, desulfurization synergistic ring and sulfur-removing additives and puies forward effect, can make the desulfuration efficiency of whole system reach more than 98%, and have more than 50% efficiency of dust collection;
Wet cottrell 4, its entrance is connected with the outlet of desulfuration absorbing tower 3, and outlet is connected to chimney 6 after the intensification section of efficient tube type heat exchanger 2-1, can reach degree of depth dust removing effects, effectively removes gypsum droplet, and to mercury and SO
3there is higher removal effect, efficiency of dust collection and SO
3removal efficiency all can reach more than 70%.
The present embodiment SCR reactor 1, low temperature cleaner 2, desulfuration absorbing tower 3 and wet cottrell 4, by interconnecting the reasonable distribution that coordinates and multiple pollutant is removed to ratio, form an organic whole, to NO
x, flue dust (comprising PM2.5), SO
2, SO
3carry out gradual removing with mercury etc., make the major pollutants content in final outlet flue gas reach gas turbine standard.
On the utility model integrated system Yi Zhe Nengjiahua 2 * 1000MW of electricity generating corporation, Ltd unit, carrying out engineering application, is improvement project.As shown in Figure 1, this integrated system is added low low temp. electric deduster 2-2, desulfuration absorbing tower 3 and wet cottrell 4 and is formed by SCR reactor 1 (joining one deck modified catalyst), two sections of efficient tube type heat exchanger 2-1, and outlet smoke components reaches: dust concentration discharges lower than 5mg/Nm
3, SO
2concentration of emission is lower than 35mg/Nm
3, NOX concentration of emission is lower than 45mg/Nm
3requirement, realize H simultaneously
gconcentration of emission is less than 0.003mg/Nm
3, SO
3concentration of emission is lower than 5mg/Nm
3, and realize full load denitration, exit gas temperature reaches more than 80 ℃, eliminates " white cigarette " and gypsum rain phenomenon.
Engineering puts into operation in August, 2013, plans, in June, 2014 completion, will build up when the time comes domestic First million kilowatt coal fired power plant unit flue gas pollutant minimum discharge technology integration and demonstration engineering.After building up, expectation will reduce 880 tons/year of smoke discharge amounts, SO for two 1,000,000 units
22524 tons/year of discharge capacitys, NO
x642 tons/year of discharge capacitys, SO
31109 tons/year of discharge capacitys, approximately 4.2 hundred million yuan of costs of investment, 0.015 yuan/KWh of operating cost.
Claims (3)
1. the efficient cooperation-removal integrated system of multiple pollutant, is characterized in that it comprises:
SCR reactor (1), its entrance is connected with the outlet flue through the improved boiler of low nitrogen burning (5) back-end ductwork, and SCR denitrating catalyst adopts can improve the modified catalyst to the oxidation susceptibility of nonvalent mercury;
Low temperature cleaner (2), its entrance is connected with the outlet of SCR reactor (1), for dedusting with remove SO
3;
Desulfuration absorbing tower (3), its entrance is connected with the outlet of low temperature cleaner (2), for desulfurization and dedusting;
Wet cottrell (4), its entrance is connected with the outlet of desulfuration absorbing tower (3), and outlet is connected to chimney (6) through heating device, for dedusting, removes gypsum droplet, mercury and SO
3.
2. the efficient cooperation-removal integrated system of multiple pollutant according to claim 1, it is characterized in that: described low temperature cleaner (2) comprises pipe heat exchanger (2-1) and low low temp. electric deduster (2-2), wherein the entrance of pipe heat exchanger (2-1) temperature descending section is connected with SCR reactor (1) outlet, and outlet is connected with low low temp. electric deduster (2-2) entrance.
3. the efficient cooperation-removal integrated system of multiple pollutant according to claim 2, is characterized in that: described heating device is the intensification section of pipe heat exchanger (2-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420229611.9U CN203836997U (en) | 2014-05-06 | 2014-05-06 | Various-contaminant high-efficiency cooperative removing integrated system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420229611.9U CN203836997U (en) | 2014-05-06 | 2014-05-06 | Various-contaminant high-efficiency cooperative removing integrated system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203836997U true CN203836997U (en) | 2014-09-17 |
Family
ID=51514829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420229611.9U Withdrawn - After Issue CN203836997U (en) | 2014-05-06 | 2014-05-06 | Various-contaminant high-efficiency cooperative removing integrated system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103994456A (en) * | 2014-05-06 | 2014-08-20 | 浙江天地环保工程有限公司 | Integrated system for efficiently and synergistically removing multiple pollutants |
| CN105664687A (en) * | 2016-03-30 | 2016-06-15 | 浙江菲达环保科技股份有限公司 | Smoke co-processing technique based on wet type electric precipitator |
| CN108176221A (en) * | 2017-12-28 | 2018-06-19 | 武汉都市环保工程技术股份有限公司 | Sintering flue gas heating denitration device and sintering flue gas heating method of denitration |
-
2014
- 2014-05-06 CN CN201420229611.9U patent/CN203836997U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103994456A (en) * | 2014-05-06 | 2014-08-20 | 浙江天地环保工程有限公司 | Integrated system for efficiently and synergistically removing multiple pollutants |
| CN103994456B (en) * | 2014-05-06 | 2015-09-09 | 浙江天地环保工程有限公司 | The efficient cooperation-removal integrated system of multiple pollutant |
| CN105664687A (en) * | 2016-03-30 | 2016-06-15 | 浙江菲达环保科技股份有限公司 | Smoke co-processing technique based on wet type electric precipitator |
| CN108176221A (en) * | 2017-12-28 | 2018-06-19 | 武汉都市环保工程技术股份有限公司 | Sintering flue gas heating denitration device and sintering flue gas heating method of denitration |
| CN108176221B (en) * | 2017-12-28 | 2024-04-09 | 中冶南方都市环保工程技术股份有限公司 | Sintering flue gas temperature rising denitration device and sintering flue gas temperature rising denitration method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140917 Effective date of abandoning: 20150909 |
|
| RGAV | Abandon patent right to avoid regrant |