CN201684521U - A flue gas mercury removal reactor - Google Patents
A flue gas mercury removal reactor Download PDFInfo
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- CN201684521U CN201684521U CN2010202164126U CN201020216412U CN201684521U CN 201684521 U CN201684521 U CN 201684521U CN 2010202164126 U CN2010202164126 U CN 2010202164126U CN 201020216412 U CN201020216412 U CN 201020216412U CN 201684521 U CN201684521 U CN 201684521U
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- flue gas
- layer
- mercury removal
- reactor
- adsorption
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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Abstract
本实用新型公开了一种烟气脱汞反应器，包括反应器壳体，反应器壳体下部设置有进气口，上部设置有出气口，其特点在于，所述反应器壳体内腔进气口与出气口之间设置有三层多孔状支撑板，各支撑板上均设置有吸附填料层。相比于现有技术，本实用新型具备脱汞效率高、实施成本便宜的优点；另外，由于设置了三层支撑板，故检修时不需搭建临时检修平台，运行维护人员可站在烟气整流板上对内部件进行维护和更换，故还具备检修维护方便的优点。
The utility model discloses a flue gas mercury removal reactor, which comprises a reactor shell. The lower part of the reactor shell is provided with an air inlet, and the upper part is provided with an air outlet. Three layers of porous support plates are arranged between the outlet and the air outlet, and each support plate is provided with an adsorption packing layer. Compared with the prior art, the utility model has the advantages of high mercury removal efficiency and low implementation cost; in addition, because of the three-layer support plate, there is no need to build a temporary maintenance platform during maintenance, and the operation and maintenance personnel can stand on the side of the flue gas. The internal parts are maintained and replaced on the rectifier board, so it also has the advantage of convenient maintenance.
Description
Technical field
The utility model relates to the flue gas demercuration technical field, especially a kind of flue gas demercuration reaction unit.
Background technology
Domestic flue gas demercuration technical research mainly concentrates on the exploitation of high-efficiency adsorbent and how effectively to utilize existing pollution control equipment to improve the removal efficiency of mercury, walks the road that combined type is polluted control.
Flue gas desulfur device and SCR equipment can capture mercury well.Utilize wet desulphurization device the oxidation state mercury of 80%-95% in the flue gas can be removed, but not remarkable for water-fast gaseous mercury seizure effect, need to use oxidant carry out oxidation to simple substance mercury earlier, have secondary pollution and production cost than problems such as height.SCR (SCR) device can be with Hg in reducing NOx
0Be oxidized to H
2+, Hg
2+Easilier relatively removed by the Wet-type spray device.Hg
0Efficient by SCR device catalytic oxidation can reach 80%～90%, and the height of oxidation efficiency is subjected to the factor affecting such as concentration of chlorine in the concentration, life of catalyst, air-flow of temperature, the ammonia of the superficial linear velocity in a column of catalytic reactor, reaction.But the major obstacle that this technology is used is that operating cost is quite high, and according to introductions such as T.D.Brown, if will reach 90% treatment effeciency, one pound of mercury of every processing needs 25000～70000 dollars.
At present, the demercuration technology near production application is directly to spray into activated carbon granule to remove simple substance mercury in flue gas, perhaps utilizes activated carbon adsorption bed to remove simple substance mercury.In flue gas, spray into powdered active carbon (PAC), remove by the deduster (as electrostatic precipitator, sack cleaner) in its downstream behind the Powdered Activated Carbon absorption mercury, but active carbon and flying dust mix, and can not regenerate.Owing to have the problem of low capacity, poor, the low thermodynamic stability of Combination, and the utilization rate of active carbon is low, consumption is big, makes direct employing active carbon adsorption cost too high.USDOE estimates that will reach the demercuration rate is 90%, and the cost that removes 0.45kg mercury is (2.5-7.0) * 10
4Dollar, the coal-burning power plant is difficult to bear.
So how to design a kind of demercuration efficient height, and the cheap demercuration technology of cost, promptly becoming the present technique field has problem to be solved.
The utility model content
Technical problem to be solved in the utility model is, a kind of flue gas demercuration reactor is provided, and uses this flue gas demercuration reactor demercuration, possesses demercuration efficient height, characteristics such as implementation cost is cheap.
In order to solve the problems of the technologies described above, adopted following technical scheme in the utility model:
A kind of flue gas demercuration reactor comprises reactor shell, and the reactor shell bottom is provided with air inlet, top is provided with the gas outlet, its characteristics are, are provided with three layers of cellular gripper shoe between described reactor enclosure intracoelomic cavity air inlet and the gas outlet, are provided with the adsorption stuffing layer on each gripper shoe.
In the technical program, flue gas enters from reactor shell below air inlet, after passing through ground floor adsorption stuffing layer, gas flowfield is able to preliminary adjustment, Flow Field Distribution is even relatively, and through the absorption of second layer adsorption stuffing layer, it is more even to make that flue gas contacts with adsorption stuffing again, by the 3rd layer of further prolong smoke of adsorption stuffing layer and adsorption stuffing layer time of contact are set, thereby obtain higher demercuration efficient.Simultaneously, because in the technical program adsorption stuffing is divided for three layers, so flying dust in the flue gas, just being adsorbed filler through ground floor the time absorbs, the two-layer adsorption stuffing in top all can utilize after the reclaiming again, avoided in the prior art, active carbon and flying dust mix, the defective that can not regenerate; Reduced implementation cost significantly.
As the further optimization of technique scheme, place, described gas outlet is provided with air exhauster.Air exhauster can make and form negative pressure, flow of flue gas in the enhancing reactor housing in the reactor shell.
As the further optimization of technique scheme, the adsorption stuffing in the described adsorption stuffing layer is that activated carbon granule is formed, and possesses the characteristics of excellent adsorption.Certainly, when specifically implementing, also can adopt to well known to a person skilled in the art other absorbent particles.
In addition, as another optimization of technical solutions of the utility model, described every layer of adsorption stuffing layer height is 500mm, and the particle diameter of adsorption stuffing is 40mm.Prove through a large amount of experimental datas, when each parameter is got the combination of this value, can guarantee that not only adsorption effect is higher, can also control the air flow resistance loss simultaneously to greatest extent, improve the passage rate of flue gas.Air flow resistance provides power so need not additionally to be provided with unnecessary blower fan for the flue gas subsequent treatment after reducing.So when having guaranteed adsorption effect, reduced implementation cost.
In sum, than prior art, the utility model possesses advantages such as demercuration efficient height, implementation cost be cheap; In addition, owing to be provided with three layers of gripper shoe, so need not build the ad hoc inspection and repair platform when overhauling, the operation maintenance personnel can stand in and on the flue gas cowling panel inner part be safeguarded and changed, so also possess repair and maintenance advantage easily.
Description of drawings
Fig. 1 is a cross-sectional view of the present utility model.
The specific embodiment
The utility model is described in further detail below in conjunction with concrete embodiment and accompanying drawing.
The specific embodiment one: as shown in Figure 1, a kind of flue gas demercuration reactor, comprise reactor shell 1, reactor shell 1 bottom is provided with air inlet 2, top is provided with gas outlet 3, wherein, be provided with three layers of cellular gripper shoe 4 between described reactor shell 1 inner chamber air inlet 2 and the gas outlet 3, be provided with adsorption stuffing layer 5 on each gripper shoe 4.During enforcement, 3 places, described gas outlet are provided with air exhauster 6, when specifically implementing, in the pipeline that described air exhauster 6 also can be arranged on the gas outlet is communicated with; Adsorption stuffing in the described adsorption stuffing layer 5 is that activated carbon granule is formed.
In order to verify the present embodiment technical scheme and to optimize concrete parameter setting, the applicant is based on above-mentioned apparatus structure, change the cellular gripper shoe into one deck or two-layer or three layers, simultaneously in conjunction with the adsorption stuffing of different-grain diameter and the adsorption stuffing layer of differing heights, carried out experimental verification, the experimental result form is as follows:
Experiment 1 uses Yongchuan, Chongqing newly to win the colliery coal sample, adsorption stuffing particle diameter 40mm
| The adsorption stuffing layer height | Gas residence time, (S) | Air velocity (m/s) | The pressure loss, kPa | Import flue gas mercury concentration, ug/m 3 | Outlet flue gas mercury concentration, ug/m 3 | Removal efficiency |
| 1500mm * 1 layer | ?20 | 0.15 | 10.4 | 15.1 | 4.1 | 73.3％ |
| 800mm * 2 layer | ?12 | 0.25 | 6.2 | 15.1 | 5.5 | 63.6％ |
| 500mm * 3 layer | ?6 | 0.50 | 2.2 | 15.1 | 2.4 | 84.1％ |
Experiment 2 is used colliery, Nayong, Guizhou coal sample, adsorption stuffing particle diameter 30mm
| The adsorption stuffing floor height | Flue gas stops | Air velocity | The pressure loss, | Import flue gas mercury | Outlet flue gas mercury | Removal efficiency |
| Degree | Time, (S) | (m/s) | kPa | Concentration, ug/m 3 | Concentration, ug/m 3 | |
| 1500mm * 1 layer | ?28 | 0.11 | 18.4 | 24.6 | 7.9 | 67.9％ |
| 800mm * 2 layer | ?16 | 0.19 | 9.5 | 24.6 | 9.9 | 59.8％ |
| 500mm * 3 layer | ?9 | 0.33 | 3.4 | 24.6 | 7.0 | 71.5％ |
Experiment 3 uses Guizhou with that colliery coal sample, adsorption stuffing particle diameter 50mm
| The adsorption stuffing layer height | Gas residence time, (S) | Air velocity (m/s) | The pressure loss, kPa | Import flue gas mercury concentration, ug/m 3 | Outlet flue gas mercury concentration, ug/m 3 | Removal efficiency |
| 1500mm * 1 layer | ?14 | 0.21 | 7.3 | 16.5 | 5.5 | 66.7％ |
| 800mm * 2 layer | ?8 | 0.38 | 2.8 | 16.5 | 6.6 | 60.0％ |
| 500mm * 3 layer | ?4 | 0.75 | 1.4 | 16.5 | 5.2 | 68.5％ |
In the above-mentioned experimentation, in the specific embodiment one, the gripper shoe of reactor shell the inside and adsorption stuffing layer are provided with getting different-grain diameter, adsorption stuffing layer for activated carbon granule and get situation such as differing heights and verify in the situation of one deck, two layers and three layers and the adsorption stuffing layer respectively.Wherein, described gas residence time be meant flue gas from the air inlet 2 of reactor shell 1 to the gas outlet time of 3, air velocity be meant flue gas from the air inlet 2 of reactor shell 1 to the gas outlet 3 average speed.The pressure loss obtains for detecting air inlet 2 air pressure and gas outlet 3 air pressure subtraction calculations.During checking, every layer of adsorption stuffing layer upper surface is to reserving about 100mm between the last layer cellular gripper shoe as the current usefulness of flue gas, aperture on the cellular gripper shoe is set to about 30mm to prevent that adsorbent from falling down, mercury concentration by in the online detection reaction device of the Zeemen effect mercury analyzer housing air inlet flue gas and the flue gas of giving vent to anger calculates demercuration efficient.According to experimental result as can be known: when gripper shoe and adsorption stuffing layer are set to three layers; Every layer of adsorption stuffing layer height is 500mm; When the particle diameter of adsorption stuffing is 40mm; Gas residence time is the shortest, air velocity is the fastest, the pressure loss is minimum, demercuration is most effective.So the effect that obtains during this group parameter is best as can be known.Not only can guarantee to adsorb the demercuration effect, can also reduce the air flow resistance loss to greatest extent, improve the passage rate of flue gas more than 80%.
More particularly, when the utility model is used for the production application demercuration, can be with the shape of described reactor shell as the cylindricality absorption tower, gripper shoe adopts the corrosion resistant plate of porous, is suitable for practical application.It is worthy of note that simultaneously structure of the present utility model not only is suitable for specifically practicing, can also be used for the research of flue gas demercuration experimental simulation.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202164126U CN201684521U (en) | 2010-06-04 | 2010-06-04 | A flue gas mercury removal reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202164126U CN201684521U (en) | 2010-06-04 | 2010-06-04 | A flue gas mercury removal reactor |
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|---|---|
| CN201684521U true CN201684521U (en) | 2010-12-29 |
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|---|---|---|---|
| CN2010202164126U Expired - Fee Related CN201684521U (en) | 2010-06-04 | 2010-06-04 | A flue gas mercury removal reactor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101844024A (en) * | 2010-06-04 | 2010-09-29 | 重庆大学 | Flue gas mercury removal device |
| CN107159684A (en) * | 2017-06-29 | 2017-09-15 | 浙江富春江环保热电股份有限公司 | Domestic garbage incineration flyash and discarded SCR catalyst coprocessing system and method |
| CN108126636A (en) * | 2017-12-21 | 2018-06-08 | 张大玲 | A kind of chemical-biological cooperates with denitrogenation dephosphorizing reactor |
| CN111715023A (en) * | 2020-02-12 | 2020-09-29 | 淮南市百邦气动科技有限公司 | Efficient and energy-saving environment-friendly equipment and using method thereof |
-
2010
- 2010-06-04 CN CN2010202164126U patent/CN201684521U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101844024A (en) * | 2010-06-04 | 2010-09-29 | 重庆大学 | Flue gas mercury removal device |
| CN101844024B (en) * | 2010-06-04 | 2012-08-29 | 重庆大学 | Flue gas mercury removal device |
| CN107159684A (en) * | 2017-06-29 | 2017-09-15 | 浙江富春江环保热电股份有限公司 | Domestic garbage incineration flyash and discarded SCR catalyst coprocessing system and method |
| CN108126636A (en) * | 2017-12-21 | 2018-06-08 | 张大玲 | A kind of chemical-biological cooperates with denitrogenation dephosphorizing reactor |
| CN111715023A (en) * | 2020-02-12 | 2020-09-29 | 淮南市百邦气动科技有限公司 | Efficient and energy-saving environment-friendly equipment and using method thereof |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101229 Termination date: 20110604 |