CN202988881U - Waste acid and waste saline water treatment system combining inorganic synthesis with carbon absorption - Google Patents

Waste acid and waste saline water treatment system combining inorganic synthesis with carbon absorption Download PDF

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Publication number
CN202988881U
CN202988881U CN 201220741398 CN201220741398U CN202988881U CN 202988881 U CN202988881 U CN 202988881U CN 201220741398 CN201220741398 CN 201220741398 CN 201220741398 U CN201220741398 U CN 201220741398U CN 202988881 U CN202988881 U CN 202988881U
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China
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chlorine
waste
spent acid
tower
treatment system
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CN 201220741398
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Chinese (zh)
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徐斌
吴冰
王庆生
吕炎奇
吴婷
孙维孟
刘校刚
程艳超
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BEIJING INNOGREEN TECHNOLOGY Co Ltd
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BEIJING INNOGREEN TECHNOLOGY Co Ltd
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Abstract

The utility model discloses a waste acid and waste saline water treatment system combining inorganic synthesis with carbon absorption. The waste acid and waste saline water treatment system combining inorganic synthesis with carbon absorption comprises a waste saline water tank, a chlorine gas synthetic tower, a filter assembly and an active carbon absorption chlorine gas tower, wherein the waste saline water tank is used for storing the waste saline water; the chlorine gas synthetic tower is used for treating the waste saline water and the waste acid under vacuum; the filter assembly is used for filtering the waste liquid which is treated by the chlorine gas synthetic tower; and the active carbon absorption chlorine gas tower is used for purifying the chlorine gas treated by the chlorine gas synthetic tower; the inlet of the chlorine gas synthetic tower is connected with a waste saline water outlet and a waste acid pipeline; the waste liquid outlet of the chlorine gas synthetic tower is connected with the filter assembly; and a chlorine gas outlet is connected with the active carbon absorption chlorine gas tower. According to the waste acid and waste saline water treatment system disclosed by the utility model, the inorganic synthesis technology and the carbon absorption technology are combined, so that the waste water treatment difficulty problem of a titanium sponge project is radically solved.

Description

A kind of inorganic spent acid effluent brine treatment system of adsorbing combination with carbon of synthesizing
Technical field
The utility model relates to the liquid waste disposal technique field, especially relates to a kind of spent acid effluent brine treatment system of inorganic synthetic and carbon absorption combination.
Background technology
Produce in the titanium sponge process at magnesiothermy, can produce effluent brine at magnesium eletrolysis operation vent gas washing system, and produce waste hydrochloric acid at the chlorination refining system.These waste liquids must be dealt carefully with, so that guarantee can be to environment.When reclaiming these waste liquids, can also reclaim some industrial chemicals (example hydrochloric acid, NaCl) simultaneously, and spent acid and effluent brine are become process water by the waste water that acid waste water reaches with oxidisability, produce obvious economy, environmental and social benefits.
Existing titanium sponge production technique can be divided into three large step two systemic circulations.Wherein three large steps comprise: the production of rich titanium material, titanium tetrachloride preparation, reduction distillation; Two systemic circulations comprise: magnesium circulation, chlorine circulation.Existing titanium sponge production technique mainly comprises raw material preparation, chlorination, TiCl 4The operations such as refining, reduction distillation, magnesium eletrolysis.Technical process is: at first the titanium material chlorination is generated thick TiCl 4, then make with extra care and obtain smart TiCl 4, smart TiCl 4Generate titanium sponge after Mg reduction and vacuum distilling, the Mg Cl of reduction process generation going back steaming process 2Send the electrolysis of magnesium eletrolysis operation to obtain metal M g and Cl 2, return steaming system, Cl after the Mg refining 2Send chlorination system after filtering compression.
The hydrogen chloride tail gas waste gas that produces in titanium sponge chlorination refining step production process, enter the refining exhaust treatment system of chlorination, by three grades of washings and two-stage alkali cleaning, tail is washed rear discharging up to standard, the hydrochloric acid that three grades of washings produce obtain suspended substance less than 5mg/L after purpose ceramic-film filter filters, concentration the is 20% about 15000 tons/a of byproduct hydrochloric acid of (domestic titanium sponge factory reality can reach 28%).The magnesium eletrolysis operation can produce the tail gas that contains chlorine, and the tail gas that contains chlorine send the magnesium eletrolysis vent gas washing system to carry out three grades of washings with sodium hydroxide solution, and tail gas rear discharging up to standard produces the approximately chlorine bleach liquor of 18000 tons/a, 10% left and right simultaneously.This shows, existing titanium sponge the production technique refining and magnesium eletrolysis operation of chlorination in process of production will produce spent acid and effluent brine.These hydrochloric acid and effluent brine all can not directly efflux, must be treated up to standard just can efflux or fully utilize afterwards.Therefore in the urgent need to reaching or near the liquid waste treatment system of zero release, to reduce the pollution to environment.
The utility model content
For the defective that exists in prior art and deficiency, the purpose of this utility model is the spent acid effluent brine treatment system that proposes a kind of inorganic synthetic and carbon absorption combination, can process to reduce pollution to environment to the waste liquid that produces in the titanium sponge production technique.
In order to achieve the above object, the utility model proposes a kind of spent acid effluent brine treatment system of inorganic synthetic and carbon absorption combination, comprising: the charcoal absorption chlorine tower that the filter assemblies that be used for the abraum salt pond of storage effluent brine, the spent acid pond that is used for the storage spent acid solution, the chlorine synthetic tower that is used under vacuum effluent brine and spent acid are processed, the waste liquid after being used for the chlorine synthetic tower is processed filters, the waste gas after being used for the chlorine synthetic tower is processed purify; Wherein the entrance of chlorine synthetic tower connects abraum salt pond outlet and spent acid pipeline, and the waste liquid outlet of chlorine synthetic tower connects strainer, the chlorine outlet connects charcoal absorption chlorine tower.
Preferred as technique scheme, the entrance of described charcoal absorption chlorine tower also connects spent acid pond outlet, and the outlet of this charcoal absorption chlorine tower connects respectively pure sour pond and is used for the sodium hydroxide cuvette of absorbing carbon dioxide.
Preferred as technique scheme, described filter assemblies comprises strainer and tube settler; The outlet of described strainer connects the entrance of tube settler, and the entrance of described tube settler also connects the alkali tank.
Preferred as technique scheme, described tube settler is provided with sludge outlet, with the water out that is connected intermediate pool.
Preferred as technique scheme, described filter assemblies also comprises cartridge filter and reverse osmosis unit; Wherein this described intermediate pool is connected clean water basin by cartridge filter with reverse osmosis unit.
Preferred as technique scheme, described reverse osmosis unit is provided with reverse osmosis water and exports to export the liquid that contains sodium-chlor.
Preferred as technique scheme, described clean water basin connect the pure water reclamation set by the reuse water pipeline that is provided with the reuse water pump.
Preferred as technique scheme, the entrance of chlorine synthetic tower connect the abraum salt pond by vacuum primingpump and export and the spent acid pipeline.
Preferred as technique scheme, the waste gas outlet of chlorine synthetic tower connects charcoal absorption chlorine tower by vacuum pump.
The beneficial effect of the technical scheme that the utility model embodiment provides is: the utility model is integrated inorganic synthesis device and carbon an adsorption device, can carry out recycling and filter waste water such as spent acid, effluent brines, can produce certain economic benefit again when having prevented the pollution to environment.The utility model utilizes the characteristic of the anabolic reaction that the chlorine element has, and the technical process of a chemosynthesis reaction of design makes it all be converted into price product, accomplishes clorox without discharging, and hydrochloric acid can take full advantage of again.The chlorine that changes into is adsorbed by hydrochloric gac pure hydrochloric acid and the salt that is prepared into high density again, and it is recycled, and has adopted this New Technologies not only to reclaim price product but also guaranteed the up to standard of water outlet, has realized the comprehensive utilization of environmental protection project.
Description of drawings
Fig. 1 is that the inorganic synthetic of the utility model embodiment adsorbed the structural representation of the spent acid effluent brine treatment system of combination with carbon.
Embodiment
Below in conjunction with accompanying drawing, the utility model preferred embodiment one is described further.
The utility model proposes a kind of inorganic spent acid effluent brine treatment system of adsorbing combination with carbon of synthesizing, its structure comprises as shown in Figure 1: the charcoal absorption chlorine tower 5 that the filter assemblies that be used for the abraum salt pond 1 of storage effluent brine, the spent acid pond 2 that is used for the storage spent acid solution, the chlorine synthetic tower 3 that is used under vacuum effluent brine and spent acid are processed, the waste liquid after being used for the chlorine synthetic tower is processed carries out contaminant filter, the waste gas after being used for the chlorine synthetic tower is processed purify.As shown in Figure 1, wherein the entrance of this chlorine synthetic tower 3 connects abraum salt pond 1 outlet and spent acid pipeline 6 by vacuum primingpump 11, and the waste liquid outlet of chlorine synthetic tower 3 connects strainer 4, chlorine outlet by vacuum pump 12 connection charcoal absorption chlorine towers 5.As shown in Figure 1, the entrance of described charcoal absorption chlorine tower 5 also connects spent acid pond 2 outlets by vacuum primingpump 13, and the outlet of this charcoal absorption chlorine tower 5 connects respectively pure sour pond 9 and is used for the sodium hydroxide cuvette 10 of absorbing carbon dioxide.As shown in Figure 1, filter assemblies comprises strainer 4 and tube settler 15.The outlet of this strainer 4 connects the entrance of tube settler 15, and the entrance of described tube settler 15 also connects alkali tank 16.The bottom of described tube settler 15 is provided with sludge outlet and selects titanium factory so that the mud that produces is sent back to, and tube settler 15 also is provided with the water out that connects intermediate pool 17., filter assemblies also comprises cartridge filter 19, reverse osmosis unit 20; This intermediate pool 17 connects cartridge filter 19, reverse osmosis unit 20, clean water basin 14 successively by high-pressure hydraulic pump 18.Wherein, this reverse osmosis unit 20 is provided with reverse osmosis water and exports to export the liquid that contains sodium-chlor, can regain sodium-chlor by processing.These clean water basin 14 connect pure water reclamation set 8 by the reuse water pipeline that is provided with reuse water pump 7.
System of the present utility model adopts the treatment system of inorganic synthetic technology and active carbon adsorption technology combination, has fundamentally solved the wastewater treatment difficult problem of titanium sponge project.The concrete synthesis technique process description of system of the present utility model is as follows:
The method of at first synthesizing by inorganic chemistry, with waste hydrochloric acid and effluent brine is mixed in proportion and by under meter by after measuring and regulate the pH value, enter the chlorine synthetic tower.Reacted gas-liquid mixture enters respectively gassy system and liquid phase systems, that is: the chlorine that contains steam enters the dry chlorine purification system, and the salt solution of chloride ion-containing enters water treatment system, then respectively two systems is processed.
Concrete, utilize the method that aforementioned device purifies to comprise:
Step 1, after being mixed in proportion, waste hydrochloric acid and effluent brine be transported to the chlorine synthetic tower of vacuum, so that after acid chlorine water seethes with excitement, obtain to contain chlorine solution and chlorine under vacuum environment.Wherein, control pH value≤1.5 after waste hydrochloric acid and effluent brine mix; And with this mixing liquid with V NaCIO: V HcI=1: 0.6 throughput ratio is input to the chlorine synthetic tower, and wherein the Vacuum Pressure of this chlorine synthetic tower is 0.06~0.08MPa.
Step 2, chlorine is transported to charcoal absorption chlorine tower, make chlorine together with hydrochloric acid by activated carbon adsorption layer, to purify waste hydrochloric acid and to improve concentration of hydrochloric acid;
Step 3, this chloride solution purification extract sodium-chlor and Zhong Shui.Concrete, come suspended contamination in filtering salt solution by strainer and tube settler; Then in and excessive acid in water, the ferrotitanium ion of precipitation in water purifies sodium chloride aqueous solution; At last this solution is carried out exporting strong brine and Zhong Shui after desalination through reverse osmosis unit.
Certainly; the utility model also can have other embodiment; in the situation that do not deviate from the utility model spirit and essence thereof; the person of ordinary skill in the field works as can make various corresponding changes and distortion according to the utility model, but these corresponding changes and distortion all should belong to the protection domain of claim of the present utility model.

Claims (9)

1. the spent acid effluent brine treatment system of inorganic synthetic and carbon absorption combination, it is characterized in that, comprising: the charcoal absorption chlorine tower that the filter assemblies that be used for the abraum salt pond of storage effluent brine, the spent acid pond that is used for the storage spent acid solution, the chlorine synthetic tower that is used under vacuum effluent brine and spent acid are processed, the waste liquid after being used for the chlorine synthetic tower is processed filters, the chlorine after being used for the chlorine synthetic tower is processed purify; Wherein the entrance of chlorine synthetic tower connects abraum salt pond outlet and spent acid pipeline, and the waste liquid outlet of chlorine synthetic tower connects strainer, the chlorine outlet connects charcoal absorption chlorine tower.
2. the spent acid effluent brine treatment system of inorganic synthetic and carbon absorption combination according to claim 1, it is characterized in that, the entrance of described charcoal absorption chlorine tower also connects the outlet of spent acid pond, and the outlet of this charcoal absorption chlorine tower connects respectively pure sour pond and is used for the sodium hydroxide cuvette of absorbing carbon dioxide.
3. the inorganic spent acid effluent brine treatment system of adsorbing combination with carbon of synthesizing according to claim 1, is characterized in that, described filter assemblies comprises strainer and tube settler; The outlet of described strainer connects the entrance of tube settler, and the entrance of described tube settler also connects the alkali tank.
4. the inorganic spent acid effluent brine treatment system of adsorbing combination with carbon of synthesizing according to claim 3, is characterized in that, described tube settler is provided with sludge outlet, with the water out that is connected intermediate pool.
5. the inorganic spent acid effluent brine treatment system of adsorbing combination with carbon of synthesizing according to claim 4, is characterized in that, described filter assemblies also comprises cartridge filter and reverse osmosis unit; Wherein this described intermediate pool is connected clean water basin by cartridge filter with reverse osmosis unit.
6. the inorganic spent acid effluent brine treatment system of adsorbing combination with carbon of synthesizing according to claim 5, is characterized in that, described reverse osmosis unit is provided with reverse osmosis water and exports to export the liquid that contains sodium-chlor.
7. the inorganic spent acid effluent brine treatment system of adsorbing combination with carbon of synthesizing according to claim 6, is characterized in that, described clean water basin connect the pure water reclamation set by the reuse water pipeline that is provided with the reuse water pump.
8. the inorganic spent acid effluent brine treatment system of adsorbing combination with carbon of synthesizing according to claim 1, is characterized in that, the entrance of chlorine synthetic tower connects abraum salt pond outlet and spent acid pipeline by vacuum primingpump.
9. the inorganic spent acid effluent brine treatment system of adsorbing combination with carbon of synthesizing according to claim 1, is characterized in that, the waste gas outlet of chlorine synthetic tower connects charcoal absorption chlorine tower by vacuum pump.
CN 201220741398 2012-12-31 2012-12-31 Waste acid and waste saline water treatment system combining inorganic synthesis with carbon absorption Active CN202988881U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103570081A (en) * 2013-11-18 2014-02-12 南通宝聚颜料有限公司 Titanium dioxide waste acid recycling and processing system
CN111362282A (en) * 2020-04-22 2020-07-03 利民化学有限责任公司 Production method and system for recycling sodium chloride from phenylguanidine carbonate synthetic wastewater
CN113149309A (en) * 2021-03-23 2021-07-23 云南国钛金属股份有限公司 Titanium sponge industrial wastewater treatment system and technology

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103570081A (en) * 2013-11-18 2014-02-12 南通宝聚颜料有限公司 Titanium dioxide waste acid recycling and processing system
CN103570081B (en) * 2013-11-18 2015-05-06 南通宝聚颜料有限公司 Titanium dioxide waste acid recycling and processing system
CN111362282A (en) * 2020-04-22 2020-07-03 利民化学有限责任公司 Production method and system for recycling sodium chloride from phenylguanidine carbonate synthetic wastewater
CN113149309A (en) * 2021-03-23 2021-07-23 云南国钛金属股份有限公司 Titanium sponge industrial wastewater treatment system and technology

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