CN203355601U - Device for treating sulfur dioxide flue gas by utilizing saponified wastewater - Google Patents

Device for treating sulfur dioxide flue gas by utilizing saponified wastewater Download PDF

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Publication number
CN203355601U
CN203355601U CN 201320436484 CN201320436484U CN203355601U CN 203355601 U CN203355601 U CN 203355601U CN 201320436484 CN201320436484 CN 201320436484 CN 201320436484 U CN201320436484 U CN 201320436484U CN 203355601 U CN203355601 U CN 203355601U
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China
Prior art keywords
flue gas
water
layer
slurry
absorption tower
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Expired - Lifetime
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CN 201320436484
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Chinese (zh)
Inventor
李效礼
李嵩
于雷波
李静
罗林恭
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SHANDONG MEILING ZHONGLIAN ENVIRONMENTAL ENGINEERING Co Ltd
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SHANDONG MEILING ZHONGLIAN ENVIRONMENTAL ENGINEERING Co Ltd
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Abstract

The utility model relates to a flue gas desulfurization treatment device, and particularly relates to a device for treating sulfur dioxide flue gas by utilizing saponified wastewater. A saponified wastewater box is connected with a slurrying tank; the slurrying tank is connected with a lime powder bin, and connected with an absorption tower; the absorption tower is provided with a serous fluid layer, a spraying layer and a demisting layer from bottom to top in sequence; the demisting layer is connected with a fresh water box; the serous fluid layer is connected with the spraying layer; a flue gas inlet of the absorption tower between the serous fluid layer and the spraying layer is connected with boiler flue gas; a flue gas outlet in the top of the absorption tower is connected with a chimney; the serous fluid layer is connected with a swirler; the upper part of the swirler is connected with a filtrate water tank; the bottom of the swirler is connected with a vacuum belt conveyor; the vacuum belt conveyor is connected with the filtrate water tank; the filtrate water tank is connected with the saponified wastewater box. The device is small in occupied area, simple and reasonable in treatment process, convenient to run and operate, low in maintenance cost, high in treatment efficiency, low in power consumption and low in treatment cost, and has no secondary pollution, and the hardware facility and the technological process are mature and reliable.

Description

Utilize saponification waste-water to process the device of sulfur dioxide flue gas
Technical field
The utility model relates to a kind of flue gas desulfurization treating apparatus, particularly a kind of device that utilizes saponification waste-water to process sulfur dioxide flue gas.
Background technology
Present Domestic has the power & light companies such as numerous power plant and power plant for self-supply, can produce a large amount of flue gases containing sulfur dioxide in the production process of this class enterprise, if dealing with improperly, this flue gas can cause very large impact to the development of enterprise's surrounding enviroment and enterprise, the method that Present Domestic is processed this type of waste gas is mainly " factures such as desulfurization by lime gypsum method, the desulfurization of magnesium method, the ammonia process of desulfurization; wherein be divided into again numerous species, but all have the problems such as processing cost in various degree is high, power consumption is high.
The utility model content
According to above deficiency of the prior art, problem to be solved in the utility model is: provide a kind of operation convenient, maintenance cost is low, treatment effeciency is high, power consumption is low, and processing cost is low, and the saponification waste-water that utilizes of non-secondary pollution is processed the device of sulfur dioxide flue gas.
The utility model solves the technical scheme that its technical problem adopts:
The described device that utilizes saponification waste-water to process sulfur dioxide flue gas, the saponification waste-water case connects pulping tank by the saponification waste-water water inlet pipe, pulping tank is connected with lime powder bin, the grout outlet of pulping tank is connected absorption tower by slurry supply pump with flow inlet, absorption tower sets gradually slurry layer from bottom to top, spraying layer and demist layer, the demist layer is connected with filtered water tank with the mist eliminator flushing pump by the demist water pipe, slurry layer is connected with spraying layer with circulation pipe by circulating pump, adsorption tower smoke entrance between slurry layer and spraying layer is connected with boiler smoke with the flue gas inlet pipe by booster fan, the exhanst gas outlet at top, absorption tower goes out pipe by flue gas and connects chimney, the slurry layer of bottom, absorption tower is connected cyclone by slurry pump with discharge pipe, cyclone top connects filtrate water box by discharging tube, the cyclone bottom connects vacuum belt machine, vacuum belt machine connects filtrate water box by filtrate pipe, filtrate water box is connected with the saponification waste-water water inlet pipe with the filtrate recurrent canal by filtrate pump.
The described device that utilizes saponification waste-water to process sulfur dioxide flue gas enters pulping tank by saponification waste-water and gypsum dehydration filtrate, the lime mix and blend of squeezing into lime powder bin in tank is made the milk of lime of 30% concentration, pump into subsequently the bottom, absorption tower, and fully contact absorption reaction by the effect of circulated sprinkling system with the flue gas in entering tower, reach the purpose of removing sulfur dioxide in flue gas, flue gas finally enters atmosphere by chimney after top, absorption tower demister removes most of moisture.Slurries need be determined slurries and the new supplementary slurries of discharging according to slurries character in the slurry layer of bottom, absorption tower, control plasm PH value well, guarantee the flue gas removal efficiency.For guaranteeing the stable and high effective operation on absorption tower, absorption tower is furnished with the demister purging system, slurries emptying and recovery system, oxidation and gypsum dehydration system.
Described slurry layer connects oxidation fan by airduct.Provide material in slurry layer to carry out the needed oxygen of chemical reaction.
Described discharge pipe is by accident slurry pipe connection accident slurry tank, and the accident slurry tank returns to by the accident slurries pump is connected the bottom, absorption tower slurry layer with the slurries recurrent canal.
The beneficial effect that the utility model has is:
The saponification waste-water that the described device that utilizes saponification waste-water to process sulfur dioxide flue gas utilizes the production in chemical plant to produce as diluent by lime be mixed with 30% concentration solution add in desulfurizing tower to realize the removal of sulfur dioxide, when reducing operating cost, reach the purpose of " treatment of wastes with processes of wastes against one another ".The utility model floor space is little, the handling process advantages of simple, and operation is convenient, and maintenance cost is low, treatment effeciency is high, and power consumption is low, processing cost is low, non-secondary pollution, and its hardware facility and the equal mature and reliable of technological process.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Wherein: 1, booster fan; 2, boiler smoke; 3, flue gas inlet pipe; 4, chimney; 5, smoke inlet; 6, flue gas goes out pipe; 7, spraying layer; 8, demist layer; 9, exhanst gas outlet; 10, demist water pipe; 11, mist eliminator flushing pump; 12, filtered water tank; 13, circulation pipe; 14, circulating pump; 15, lime powder bin; 16, pulping tank; 17, saponification waste-water water inlet pipe; 18, saponification waste-water case; 19, filtrate recurrent canal; 20, slurry supply pump; 21, flow inlet; 22, cyclone; 23, vacuum belt machine; 24, slurry pump; 25, filtrate pump; 26, filtrate pipe; 27, filtrate water box; 28, discharging tube; 29, accident slurry tank; 30, the accident slurries return to pump; 31, accident slurry pipe; 32, slurries recurrent canal; 33, slurry layer; 34, oxidation fan; 35, absorption tower; 36, airduct; 37, discharge pipe.
The specific embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described further:
As shown in Figure 1, the device that utilizes saponification waste-water to process sulfur dioxide flue gas described in the utility model, saponification waste-water case 18 connects pulping tank 16 by saponification waste-water water inlet pipe 17, pulping tank 16 is connected with lime powder bin 15, the grout outlet of pulping tank 16 is connected absorption tower 35 by slurry supply pump 20 with flow inlet 21, absorption tower 35 sets gradually slurry layer 33 from bottom to top, spraying layer 7 and demist layer 8, demist layer 8 is connected with filtered water tank 12 with mist eliminator flushing pump 11 by demist water pipe 10, slurry layer 33 is connected with spraying layer 7 with circulation pipe 13 by circulating pump 14, adsorption tower smoke entrance 5 between slurry layer 33 and spraying layer 7 is connected with boiler smoke 2 with flue gas inlet pipe 3 by booster fan 1, the exhanst gas outlet 9 at 35 tops, absorption tower goes out pipe 6 by flue gas and connects chimney 4, the slurry layer 33 of 35 bottoms, absorption tower is connected cyclone 22 by slurry pump 24 with discharge pipe 37, cyclone 22 tops connect filtrate water box 27 by discharging tube 28, cyclone 22 bottoms connect vacuum belt machine 23, vacuum belt machine 23 connects filtrate water box 27 by filtrate pipe 26, filtrate water box 27 is connected with saponification waste-water water inlet pipe 17 with filtrate recurrent canal 19 by filtrate pump 25.
Wherein preferably slurry layer 33 connects oxidation fan 34 by airduct 36, and discharge pipe 37 is by accident slurry pipe 31 connection accident slurry tanks 29, and accident slurry tank 29 returns to pump 30 by the accident slurries and is connected the slurry layer 33 of 35 bottoms, absorption tower with slurries recurrent canal 32.
Operation principle:
Describedly be provided with saponification waste-water water inlet pipe 17 and filtrate recurrent canal 19 while utilizing corresponding pulping tank 16 preparing lime milk of device that saponification waste-water processes sulfur dioxide flue gas, enter absorption tower 35 by slurry supply pump 20 by flow inlet 21 after lime is mixed with to 30% concentration solution.Circulating pump 14 enters nozzle atomization to tower prime cement liquid by circulation pipe 13 and fully contacts with the flue gas entered in tower by flue gas inlet pipe 3 by booster fan 1 effect, in being absorbed and chemical reaction, reach the purpose of removing sulfur dioxide in flue gas, flue gas after purification goes out pipe 6 by flue gas and enters chimney 4 atmosphere that enters up to standard after the demist of tower top demister, demister needs constantly by mist eliminator flushing pump 11, the clear water in filtered water tank 12 to be squeezed into to the tower inner nozzle by demist water pipe 10 and is cleaned, and prevents fouling.
In the 35 bottom slurry layer of absorption tower, the interior material of slurries carries out the required oxygen of chemical reaction is provided by airduct 36 by oxidation fan 34.In slurry layer, slurries need be according to the pH value, regularly entering cyclone 22 by slurry pump 24 by discharge pipe 37 carries out Separation of Solid and Liquid, parting liquid enters filtrate water box 27 by discharging tube 28, cyclone 22 bottom high concentration slurries enter vacuum belt machine 23 and carry out processed, calcium sulfate after dehydration or gypsum outward transport are disposed, the filtrate removed also enters filtrate water box 27 by filtrate pipe 26, enters pulping tank 16 by filtrate pump 25 by filtrate recurrent canal 19 afterwards and recycles.When in slurry layer, slurries do not meet instructions for use, by slurry pump 24, by accident slurry pipe 31, entering accident slurry tank 29 is kept in, according to the interior slurries actual conditions in absorption tower 35, return to pump 30 by the accident slurries and return in tower and again utilize by slurries recurrent canal 32 subsequently.
The utility model adds lime by saponification waste-water to be made desulfurizing agent and is applied to the flue gas desulfurization treatment process, the saponification waste-water that this process innovation part is to utilize the production in chemical plant to produce as diluent by lime be mixed with 30% concentration solution add in desulfurizing tower to realize the removal of sulfur dioxide, take full advantage of the high PH of saponification waste-water, the characteristics that hydroxyl concentration is high, when reducing operating cost, reach the purpose of " treatment of wastes with processes of wastes against one another ", the problem prospect of this device smoke treatment sulfur dioxide is boundless.

Claims (3)

1. a device that utilizes saponification waste-water to process sulfur dioxide flue gas, it is characterized in that: saponification waste-water case (18) connects pulping tank (16) by saponification waste-water water inlet pipe (17), pulping tank (16) is connected with lime powder bin (15), the grout outlet of pulping tank (16) is connected absorption tower (35) by slurry supply pump (20) with flow inlet (21), absorption tower (35) sets gradually slurry layer (33) from bottom to top, spraying layer (7) and demist layer (8), demist layer (8) is connected with filtered water tank (12) with mist eliminator flushing pump (11) by demist water pipe (10), slurry layer (33) is connected with spraying layer (7) with circulation pipe (13) by circulating pump (14), adsorption tower smoke entrance (5) between slurry layer (33) and spraying layer (7) is connected with boiler smoke (2) with flue gas inlet pipe (3) by booster fan (1), the exhanst gas outlet (9) at top, absorption tower (35) goes out pipe (6) by flue gas and connects chimney (4), the slurry layer (33) of bottom, absorption tower (35) is connected cyclone (22) by slurry pump (24) with discharge pipe (37), cyclone (22) top connects filtrate water box (27) by discharging tube (28), cyclone (22) bottom connects vacuum belt machine (23), vacuum belt machine (23) connects filtrate water box (27) by filtrate pipe (26), filtrate water box (27) is connected with saponification waste-water water inlet pipe (17) with filtrate recurrent canal (19) by filtrate pump (25).
2. the device that utilizes saponification waste-water to process sulfur dioxide flue gas according to claim 1, it is characterized in that: described slurry layer (33) connects oxidation fan (34) by airduct (36).
3. the device that utilizes saponification waste-water to process sulfur dioxide flue gas according to claim 1, it is characterized in that: described discharge pipe (37) is by accident slurry pipe (31) connection accident slurry tank (29), and accident slurry tank (29) returns to by the accident slurries pump (30) is connected bottom, absorption tower (35) slurry layer (33) with slurries recurrent canal (32).
CN 201320436484 2013-07-22 2013-07-22 Device for treating sulfur dioxide flue gas by utilizing saponified wastewater Expired - Lifetime CN203355601U (en)

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Application Number Priority Date Filing Date Title
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109395550A (en) * 2018-12-14 2019-03-01 安徽海螺集团有限责任公司 It is a kind of for removing the processing system of sulfur dioxide in flue gas
CN110436505A (en) * 2019-08-07 2019-11-12 蒋克旭 A kind of method of desulfurization co-production gypsum and calcium chloride
CN113830871A (en) * 2021-09-30 2021-12-24 东营华泰化工集团有限公司 Combined pretreatment process for saponified wastewater and desulfurized wastewater

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109395550A (en) * 2018-12-14 2019-03-01 安徽海螺集团有限责任公司 It is a kind of for removing the processing system of sulfur dioxide in flue gas
CN110436505A (en) * 2019-08-07 2019-11-12 蒋克旭 A kind of method of desulfurization co-production gypsum and calcium chloride
CN113830871A (en) * 2021-09-30 2021-12-24 东营华泰化工集团有限公司 Combined pretreatment process for saponified wastewater and desulfurized wastewater

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Granted publication date: 20131225

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