CN203577463U - Treatment system for treating waste sulfuric acid produced after treatment of furnace gas - Google Patents
Treatment system for treating waste sulfuric acid produced after treatment of furnace gas Download PDFInfo
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- CN203577463U CN203577463U CN201320715132.3U CN201320715132U CN203577463U CN 203577463 U CN203577463 U CN 203577463U CN 201320715132 U CN201320715132 U CN 201320715132U CN 203577463 U CN203577463 U CN 203577463U
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Abstract
The utility model discloses a treatment system for treating waste sulfuric acid produced after treatment of furnace gas, belonging to the technical field of chemical industry. The system comprises a Venturi tube, a foam tower, a plate type heat exchanger, an acid mixing pond, a water distributor, a CN filter, an acid cleaning pond, a sewage pond, a plate-and-frame filter press and an overhead tank, wherein the Venturi tube is communicated with the foam tower through a furnace gas pipeline; the overflow port of the foam tower is connected with the input end of the plate type heat exchanger through a pipeline; the output end of the plate type heat exchanger is connected with the water filling port of the foam tower through a pipeline; the foam tower is provided with a water replenishing port; the overflow port of the Venturi tube, the drain outlet of the Venturi tube and the drain outlet of the foam tower are connected with the inlet of the acid mixing pond through pipelines; the outlet of the acid mixing pond is connected with the input end of the water distributor through a pipeline; the output end of the water distributor is connected with the liquid inlet of the CN filter through a pipeline; the liquid outlet of the CN filter is connected with the inlet of the acid clearing pond; and the outlet of the acid clearing pond is connected with the water filling port of the Venturi tube through a pipeline. By adopting the system, the startup rate is increased effectively.
Description
Technical field
The utility model belongs to chemical technology field, particularly a kind for the treatment of system of processing the Waste Sulfuric Acid producing after furnace gas.
Background technology
In sulphuric acid process, need, by Venturi tube and foaming tower, furnace gas is sprayed to processing, referring to Fig. 1, existing spent acid treatment system after furnace gas is processed is:
The blowdown of a, foaming tower, overflow gather to nitration mixture pond, and the diluted acid in nitration mixture pond, then is outputed to CN filter by water-locator and filters for to water-locator by nitration mixture pump, and filtrate is entered sour clearly pond; Diluted acid in clear sour pond is lowered the temperature through plate type heat exchanger (the direct closed cycle of recirculated water that plate changes) by clear sour pump, and the diluted acid after cooling utilizes the power of pump for to foaming tower, forms like this systemic circulation.Once, moisturizing is by clear sour pond supply in foaming tower sewage draining exit timing blowdown.
The shower nozzle that the diluted acid of b, Venturi tube overflow output is delivered in Venturi tube by Venturi tube cyclic acid pump carries out inner loop, periodical blowdown; Foaming tower to Venturi tube connects by moisturizing pipeline, mends diluted acid maintain balance by foaming tower.
Sludge-tank is directly entered in c, the blowdown of CN filter, and medicine-adding bin is added flocculant, and flocculant utilizes the suction of drop and nitration mixture pump evenly to mix laggard water-locator with the diluted acid in nitration mixture pond after stirring.
D, Venturi tube blowdown pipeline and CN filter blowdown pipeline enter sludge-tank, and the mud in sludge-tank carries out press filtration by sludge pump for plate and frame filter press, and the filtrate after press filtration is entered sour clearly pond or nitration mixture pond, by valve, is controlled.
Applicant finds following problem when realizing the utility model:
1) shower nozzle of Venturi tube is because the high diluted acid of solid content washes away cracky, and 100,000 tons of systems are especially outstanding, causes resistance high because trunnion stops up simultaneously, during labor cleaning, cause the breakage of collapsible tube and trunnion liner, cause corrosion damaged, the increase to later stage production and maintenance cost; Venturi tube cyclic acid pump corrosion rate is accelerated, and comprises housing, impeller, shaft seal etc.
2) discharge of foaming tower systemic circulation is large, the burden weight of CN filter, and the filter effect of CN filter is general, when filtration yield is larger, the diluted acid after its filtration is unclear, and because diluted acid is unclear, cause plate to change sheet and wash away breakage, and plate changes sheet breakage, clear acid is gone here and there to plate and is changed the circulatory system, causes the corrosion of circulating water pool burn into water circulating pump.
3) because the sulfuric acid of high solids content in existing acid treatment system is serious to the corrosion of equipment and damage, need frequent shutdown maintenance, driving rate is low, has increased production cost.
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Summary of the invention
In order to address the above problem, the utility model embodiment provides a kind for the treatment of system of processing the Waste Sulfuric Acid producing after furnace gas, can effectively improve the driving rate of system, reduces production costs.Described technical scheme is as follows:
The utility model embodiment also provides a kind for the treatment of system of processing the Waste Sulfuric Acid producing after furnace gas, and this system comprises Venturi tube, foaming tower, plate type heat exchanger, nitration mixture pond, water-locator, CN filter, clear sour pond, sludge-tank, plate and frame filter press and head tank.
Wherein, Venturi tube is communicated with by furnace gas pipeline with foaming tower, and the overfall of foaming tower is connected with the input of plate type heat exchanger by pipeline, and the output of plate type heat exchanger is connected with the filling pipe end of foaming tower by pipeline, and foaming tower is provided with water supplement port.
Wherein, the overfall of Venturi tube, the sewage draining exit of Venturi tube is connected with the entrance in nitration mixture pond by pipeline with the sewage draining exit of foaming tower, the outlet in nitration mixture pond is connected with the input of water-locator by pipeline, the output of water-locator is connected with the inlet of CN filter by pipeline, the liquid outlet of CN filter is connected with the entrance in clear sour pond, the mud mouth of CN filter is connected with the import of sludge-tank by pipeline, the outlet of sludge-tank is connected with the liquid input of plate and frame filter press by pipeline, the liquid outlet side of plate and frame filter press is connected with nitration mixture Chi Heqingsuanchi by pipeline, the outlet in clear sour pond is connected with head tank with the filling pipe end of Venturi tube by pipeline, head tank bottom delivery port is connected with the protective device in Venturi tube.
Wherein, the foaming tower in the utility model embodiment is connected with the water supplement port of Venturi tube by moisturizing pipeline.
Further, the treatment system providing at the utility model embodiment also comprises desorption tower and phosphoric acid extraction groove, and described clear sour pond, desorption tower are connected successively with phosphoric acid extraction groove.
Wherein, the sewage draining exit of the water-locator in the utility model embodiment is connected with the entrance in nitration mixture pond.
The beneficial effect that the technical scheme that the utility model embodiment provides is brought is:
A, thoroughly solved the damage problem of the equipment such as shower nozzle, pump.
B, optimized technic index, guaranteed the unclear negative effect bringing to system of diluted acid, reduced the corrosion to equipment, and then guaranteed to have reduced production cost by driving rate.
The acid treatment system that c, the utility model provide, substantially without outer row, has solved the diluted acid environmental issue of restriction gas washing in SA production.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of Waste Sulfuric Acid treatment system of the prior art;
Fig. 2 is the structured flowchart of the treatment system of the Waste Sulfuric Acid that produces after the processing furnace gas that provides of the utility model embodiment;
Fig. 3 is the structural representation of the treatment system of the Waste Sulfuric Acid that produces after the processing furnace gas that provides of the utility model embodiment.
In figure: 1 foaming tower, 2 Venturi tubes, 3 first clear sour pumps, 4 plate type heat exchangers, 5 plate and frame filter press, 6 furnace gas pipelines, 7 moisturizing pipelines, 8 head tanks, 9 nitration mixture ponds, 10 nitration mixture pumps, 11 distributors, 12CN filter, 13 clear sour ponds, 14 second clear sour pumps, 15 desorption towers, 16 phosphoric acid extraction grooves, 17 sludge-tanks, 18 sludge pumps.
The specific embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing, the utility model is described in further detail.
Referring to Fig. 2, the utility model embodiment provides a kind for the treatment of system of processing the Waste Sulfuric Acid producing after furnace gas, and this system comprises Venturi tube, foaming tower, plate type heat exchanger, nitration mixture pond, water-locator, CN filter, clear sour pond, sludge-tank, plate and frame filter press and head tank.Each above-mentioned structure is all the structure of existing acid treatment system, and its effect is identical with the effect of existing each structure, and just its concrete annexation is different, and its annexation is as follows:
Wherein, Venturi tube is communicated with by furnace gas pipeline with foaming tower, and the overfall of foaming tower is connected with the input of plate type heat exchanger by pipeline, and the output of plate type heat exchanger is connected with the filling pipe end of foaming tower by pipeline, and foaming tower is provided with water supplement port.Be that foaming tower and plate type heat exchanger form a diluted acid circulation.
Wherein, the overfall of Venturi tube, the sewage draining exit of Venturi tube is connected with the entrance in nitration mixture pond by pipeline with the sewage draining exit of foaming tower, the outlet in nitration mixture pond is connected with the input of water-locator by pipeline, the output of water-locator is connected with the inlet of CN filter by pipeline, the liquid outlet of CN filter is connected with the entrance in clear sour pond, the mud mouth of CN filter is connected with the import of sludge-tank by pipeline, the outlet of sludge-tank is connected with the liquid input of plate and frame filter press by pipeline, the liquid outlet side of plate and frame filter press is by pipeline be connected with nitration mixture Chi Heqingsuanchi (specifically can carry out gating by valve), the outlet in clear sour pond is connected with head tank with the filling pipe end of Venturi tube by pipeline, head tank bottom delivery port is connected with Venturi tube trunnion spray protector, play protective effect while cutting off the water supply suddenly (when cutting off the water supply, more than higher 300 degree of furnace gas temperature, easily burn out Venturi tube).Take Venturi tube, nitration mixture pond, water-locator, CN filter and clear sour pond as another circulation of main composition, two cyclic parts intersect.
The process that system the utility model being provided below in conjunction with Fig. 2 and Fig. 3 is processed sulfuric acid describes:
1) furnace gas sprays after processing and produces diluted acid through Venturi tube and foaming tower successively, the diluted acid of the overfall output of foaming tower is delivered to plate type heat exchanger (the direct closed cycle of recirculated water of plate type heat exchanger) lowers the temperature, diluted acid after cooling returns to foaming tower again and carries out spray in tower, and the moisturizing of foaming tower realizes by the water supplement port on it.Foaming tower and plate type heat exchanger form a systemic circulation, and in circulation, owing to being the diluted acid overflowing, impurity is less, can not affect the result of use of plate type heat exchanger.Foaming tower sewage draining exit regularly blowdown once, with the limpid degree of the interior diluted acid that keeps circulating, as every two hours blowdown once.Moisturizing is by the supply of foaming tower groove, if the flow of shower water is inadequate in foaming tower, can in foaming tower, send into clear water.
2) diluted acid of foaming tower sewage draining exit and Venturi tube output (comprising the overfall of Venturi tube and the diluted acid of sewage draining exit output) is gathered to nitration mixture pond, diluted acid in nitration mixture pond is sent into CN filter and is carried out Separation of Solid and Liquid after water-locator is processed, the filtrate that filtration is obtained and mud are sent into respectively in sour clearly pond and sludge-tank, mud in sludge-tank is delivered to plate and frame filter press and carry out press filtration, the filtrate that press filtration obtains is sent in Huo Qingsuan pond, nitration mixture pond, diluted acid in clear sour pond is sent in Venturi tube and (specifically can be sent in Venturi tube and the head tank for Venturi tube water supply) and manage interior spray.Take Venturi tube, nitration mixture pond, water-locator, CN filter and clear sour pond etc. as another circulation of main composition, this circulation is carried out filtration treatment by the diluted acid in Venturi tube circulation, reduces the loss to equipment such as pump, shower nozzles; And two cyclic parts intersect, for to Venturi tube, this larger loops moisturizing.
Wherein, in the utility model embodiment, clear sour pond can be connected with a plurality of Venturi tubes, and as Venturi tube being divided into two groups, 4,6,10 tons is one group, and 80,000 tons is one group, to increase operation rate.Each foaming tower is joined many platen types heat exchanger, as adopt one open two standby or two open a form such as standby.
Wherein, the sewage draining exit of aforesaid each equipment is all provided with valve, can regularly carry out blowdown.
Wherein, the foaming tower in the utility model embodiment is connected and is used to Venturi tube moisturizing with the water supplement port of Venturi tube by moisturizing pipeline.
Further, the treatment system providing at the utility model embodiment also comprises desorption tower and phosphoric acid extraction groove, and clear sour pond, desorption tower and phosphoric acid extraction groove are connected successively, for Venturi tube circulation diluted acid more than needed is arranged to utilization outward.
Wherein, the sewage draining exit of the water-locator in the utility model embodiment is connected with the entrance in nitration mixture pond.
Particularly, referring to Fig. 3, the concrete annexation of native system is as follows:
Wherein, referring to Fig. 3, Venturi tube 2 is communicated with by furnace gas pipeline 6 with foaming tower 1, and meanwhile, foaming tower 1 is also connected by moisturizing pipeline 7 with Venturi tube 2.The overfall of foaming tower 1 is connected with the input of plate type heat exchanger 4 by pipeline, and this pipeline is provided with the first clear sour pump 3; The output of plate type heat exchanger 4 is connected with the filling pipe end of foaming tower 2 by pipeline, and this pipeline is provided with flowmeter (for detection of the spray flux in foaming tower 1).Foaming tower 1 is provided with the water supplement port that supplements clear water.
Wherein, the first clear sour pump 3 can adopt variable frequency adjustment, and lining tetrafluoro valve is all equipped with in these circulating pump import and export.Foaming tower 1 groove place adds one and mends clear water pipeline as water supplement port, and the height of its overfall suitably reduces, to meet its circulation needs.Meanwhile, plate type heat exchanger 4 can arrange three realize two open one standby.
Wherein, referring to Fig. 3, the sewage draining exit of the overfall of Venturi tube 2, Venturi tube 2 is connected with the entrance in nitration mixture pond 9 by pipeline with the sewage draining exit of foaming tower 1, and the outlet in nitration mixture pond 9 is connected with the input of water-locator 11 by pipeline, and this pipeline is provided with nitration mixture pump 10.The output of water-locator 11 is connected with the inlet of CN filter 12 by pipeline, and the sewage draining exit of water-locator 11 is connected with the entrance in nitration mixture pond 9 by pipeline.The liquid outlet of CN filter 12 is connected with the entrance in clear sour pond 13, the mud mouth of CN filter 12 is connected with the import of sludge-tank 17 by pipeline, the outlet of sludge-tank 17 is connected with the liquid input of plate and frame filter press 5 by pipeline, and this pipeline is provided with sludge pump 18; The liquid outlet side of plate and frame filter press 5 (liquid is discharged after can collecting by collecting vessel again) is connected with the entrance in clear sour pond 13 with the entrance in nitration mixture pond 9 by pipeline.The outlet in clear sour pond 13 is connected with the water inlet of head tank 8 with the filling pipe end of Venturi tube 2 by pipeline, this pipeline is provided with the second clear sour pump 14 and flowmeter, the exit of the second clear sour pump 14 is also connected with desorption tower 15 by a pipeline, and desorption tower 15 is connected successively with phosphoric acid extraction groove 16.Head tank 8 bottom delivery ports are connected with Venturi tube 2 trunnion spray protectors.
Wherein, Venturi tube 2 outputs to the end of the pipeline in 9 planes of nitration mixture pond must do U-shaped fluid-tight elbow, and preventing that nitration mixture pond 9 liquid levels are low cannot fluid-tight; And this pipe valve standard-sized sheet guarantees displacement, to reduce too high negative pressure fluctuation and the groove laying dust causing of liquid level in Venturi tube 2.
Wherein, CN filter 12 uses many, and part filter is standby, and standby filter inlet is at water-locator valve place slip spade, prevents valves leakage and causes filter leaching material to harden; Another reserve filter inlet is made molybdenum two titanium cover plates and is embedded, and prevent that this section is to valve section deposition obstruction, and cover plate is done lifting ear.
Wherein, as shown in Figure 3, according to controlling, need on each pipeline, valve to be set, the utility model no longer describes in detail.
In addition, the treatment system of the Waste Sulfuric Acid that the utility model embodiment provides can be transformed by existing spent acid treatment system, and transformation is simple, and cost is low, and still, treatment effect has obvious lifting.Take nitration mixture pump 10 as example, and its flow, less than 1/2nd of the front former nitration mixture pump discharge of transformation, is 400 sides' pump as original, only need now 200 sides' pump, greatly alleviated the burden (originally the quantity of filter is 13, only needs 5 now, and 8 can be standby) of CN filter 12.Meanwhile, the clear acid of Venturi tube 2 outputs can not damage the equipment such as shower nozzle, pump, and foaming tower can normally be worked equally after processing after filtration.Through production practices, the diluted acid of the more original acid treatment system output of the acid of clear sour pond 13 outputs is more clear, and the outer row's demand of diluted acid still less, has reduced processing cost simultaneously; And driving rate has obvious lifting, in a disguised form reduced production cost.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (4)
1. process a treatment system for the Waste Sulfuric Acid producing after furnace gas, this system comprises Venturi tube, foaming tower, plate type heat exchanger, nitration mixture pond, water-locator, CN filter, clear sour pond, sludge-tank, plate and frame filter press and head tank; It is characterized in that,
Venturi tube is communicated with by furnace gas pipeline with foaming tower, and the overfall of foaming tower is connected with the input of plate type heat exchanger by pipeline, and the output of plate type heat exchanger is connected with the filling pipe end of foaming tower by pipeline, and foaming tower is provided with water supplement port;
The overfall of Venturi tube, the sewage draining exit of Venturi tube is connected with the entrance in nitration mixture pond by pipeline with the sewage draining exit of foaming tower, the outlet in nitration mixture pond is connected with the input of water-locator by pipeline, the output of water-locator is connected with the inlet of CN filter by pipeline, the liquid outlet of CN filter is connected with the entrance in clear sour pond, the mud mouth of CN filter is connected with the import of sludge-tank by pipeline, the outlet of sludge-tank is connected with the liquid input of plate and frame filter press by pipeline, the liquid outlet side of plate and frame filter press is connected with nitration mixture Chi Heqingsuanchi by pipeline, the outlet in clear sour pond is connected with head tank with the filling pipe end of Venturi tube by pipeline, head tank bottom delivery port is connected with the protective device in Venturi tube.
2. system according to claim 1, is characterized in that, foaming tower is connected with the water supplement port of Venturi tube by moisturizing pipeline.
3. system according to claim 1, is characterized in that, described system also comprises desorption tower and phosphoric acid extraction groove, and described clear sour pond, desorption tower are connected successively with phosphoric acid extraction groove.
4. system according to claim 1, is characterized in that, the sewage draining exit of described water-locator is connected with the entrance in nitration mixture pond.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320715132.3U CN203577463U (en) | 2013-11-14 | 2013-11-14 | Treatment system for treating waste sulfuric acid produced after treatment of furnace gas |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320715132.3U CN203577463U (en) | 2013-11-14 | 2013-11-14 | Treatment system for treating waste sulfuric acid produced after treatment of furnace gas |
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| CN203577463U true CN203577463U (en) | 2014-05-07 |
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| CN201320715132.3U Withdrawn - After Issue CN203577463U (en) | 2013-11-14 | 2013-11-14 | Treatment system for treating waste sulfuric acid produced after treatment of furnace gas |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103585816A (en) * | 2013-11-14 | 2014-02-19 | 湖北祥云(集团)化工股份有限公司 | Method and system for treating waste sulfuric acid produced after treatment of furnace gas |
| CN104261356A (en) * | 2014-09-09 | 2015-01-07 | 安徽省司尔特肥业股份有限公司 | Dilute acid purification technique |
-
2013
- 2013-11-14 CN CN201320715132.3U patent/CN203577463U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103585816A (en) * | 2013-11-14 | 2014-02-19 | 湖北祥云(集团)化工股份有限公司 | Method and system for treating waste sulfuric acid produced after treatment of furnace gas |
| CN103585816B (en) * | 2013-11-14 | 2016-01-13 | 湖北祥云(集团)化工股份有限公司 | A kind of process furnace gas after the processing method of Waste Sulfuric Acid that produces and treatment system |
| CN104261356A (en) * | 2014-09-09 | 2015-01-07 | 安徽省司尔特肥业股份有限公司 | Dilute acid purification technique |
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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: 20140507 Effective date of abandoning: 20160113 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |