CN209161509U - A kind of salt refining system of electrolysis production chlorine and hydrogen - Google Patents

Abstract

The utility model discloses the salt refining systems of a kind of electrolysis production chlorine and hydrogen comprising water source, water distributing trough, regulator storage tank, salt dissolving pond, solid Yanyuan, preceding reactive tank, storage alkali tank, sedimentation basin, flocculant storage tank, rear reactive tank, sodium carbonate storage tank, filter, resin tower, pure saline slot, acid solution holding vessel, aqueous slkali holding vessel, desalination water source and filter press.The utility model has the advantages that the utility model structure is simple, Yi Shixian；Precipitating forms sludge by filter press filters pressing, and the salt water being press-filtered out, which is re-delivered in water distributing trough, to be reused, and avoids salt water waste；The regenerative wastewater of resin tower is transported to water distributing trough, is re-used as industrial water, without being discharged into Sewage Disposal, reduces the treating capacity of sewage and the amount of labour of staff；This system realizes sewage zero-discharge, avoids the pollution to environment.

Description

A kind of salt refining system of electrolysis production chlorine and hydrogen

Technical field:

The utility model relates to a kind of salt refining system more particularly to the salt crystals of a kind of electrolysis production chlorine and hydrogen System processed.

Background technique:

Polyvinyl chloride, abbreviation PVC are the thermoplastic resins being polymerized under initiator effect by vinyl chloride, are chloroethenes The homopolymer of alkene, vinyl chloride is to be generated by hydrogen chloride and acetylene reaction as raw material, wherein the raw material chlorine of production hydrogen chloride Gas and hydrogen are prepared by electrolytic sodium chloride (refined brine), need to carry out at purification sodium chloride brine before electrolysis Reason removes hardness and other impurities in sodium chloride brine；Existing brine rectification process is first in salt dissolving pond by solid salt It is mixed to form salt water with water, caustic soda then is added in preceding reactive tank, precipitates the magnesium ion in salt water, it is heavy using sedimentation basin It forms sediment, sodium carbonate then is added in rear reactive tank, makes the calcium ions precipitate in salt water, is filtered using filter, finally entered Pass through further absorption of the resin to calcium ions and magnesium ions in resin tower, forms pure saltwater-storage into pure saline slot；Using above-mentioned side Method has the following problems: 1, during precipitated impurities are discharged, part salt water is discharged also with precipitated impurities, causes salt water Waste, while also polluting environment；2, absorbing calcium ions and magnesium ions will be lost after the resin treatment salt water of specified amount in resin tower Ability needs to first pass through pickling, is then rinsed by desalted water, then by alkali cleaning, finally passes through desalted water again The resin regeneration reduction for making to lose suction-operated is rinsed to resin, lean solution of the resin tower after regeneration is all sent to dirt Water treatment station processing, increases the treating capacity of Sewage Disposal and the amount of labour of staff.

Utility model content:

The purpose of this utility model is to provide a kind of structure is simple, sewage zero-discharge is realized, and avoid salt water wave The salt refining system of a kind of the electrolysis production chlorine and hydrogen that take.

The utility model is implemented by following technical solution: a kind of salt refining system of electrolysis production chlorine and hydrogen, Including water source, water distributing trough, regulator storage tank, salt dissolving pond, solid Yanyuan, preceding reactive tank, storage alkali tank, sedimentation basin, flocculant storage tank, Reactive tank, sodium carbonate storage tank, filter, resin tower, pure saline slot, acid solution holding vessel, aqueous slkali holding vessel, desalination water source afterwards And filter press；The water source is connected to the water inlet of the water distributing trough, the feed inlet of the regulator storage tank and the water distributing trough Connection, the water outlet of the water distributing trough are connected to the water inlet in the salt dissolving pond；The feed inlet and the solid in the salt dissolving pond Yanyuan connection；The liquid outlet in the salt dissolving pond is connected to the inlet of the preceding reactive tank, it is described storage alkali tank outlet with it is described The feed inlet of preceding reactive tank is connected to, and the liquid outlet of the preceding reactive tank is connected to the sedimentation basin inlet, the flocculant storage The outlet of tank is connected to the feed inlet of the sedimentation basin；The inlet of the liquid outlet of the sedimentation basin and the rear reactive tank connects It is logical；The outlet of the sodium carbonate storage tank with it is described after the feed inlet of reactive tank be connected to, the liquid outlet of reactive tank afterwards with it is described The inlet of filter is connected to；The liquid outlet of the filter is connected to the inlet of the resin tower, and the resin tower goes out Liquid mouth is connected to the pure saline slot, and the acid solution holding vessel, the aqueous slkali holding vessel and the desalination water source are and institute State the backwash inlet communication of resin tower；The backwash outlets of the resin tower are connected to the water inlet of the water distributing trough；The filtering The sewage draining exit of the sewage draining exit of device and the sedimentation basin is connected to the inlet of the filter press, the liquid outlet of the filter press with The water inlet of the water distributing trough is connected to.

The advantages of the utility model: 1, the utility model structure is simple, Yi Shixian；Precipitating forms dirt by filter press filters pressing Mud, the salt water being press-filtered out, which is re-delivered in water distributing trough, to be reused, and avoids salt water waste；2, the regeneration of resin tower Lean solution is transported in water distributing trough as industrial water, without being discharged into Sewage Disposal, reduce sewage treating capacity and The amount of labour of staff；3, this system realizes sewage zero-discharge, avoids the pollution to environment.

Detailed description of the invention:

Fig. 1 is the overall structure diagram of the utility model embodiment.

Water source 1, water distributing trough 2, regulator storage tank 3, salt dissolving pond 4, solid Yanyuan 5, preceding reactive tank 6 store up alkali tank 7, sedimentation basin 8, flocculant storage tank 9, rear reactive tank 10, sodium carbonate storage tank 11, filter 12, resin tower 13, pure saline slot 14, filter press 15, Acid solution holding vessel 16, aqueous slkali holding vessel 17, desalination water source 18.

Specific embodiment:

Below in conjunction with attached drawing, by embodiment, the utility model is described in further detail.

As shown in Figure 1, the salt refining system of a kind of electrolysis production chlorine and hydrogen comprising water source 1, is adjusted water distributing trough 2 Save agent storage tank 3, salt dissolving pond 4, solid Yanyuan 5, preceding reactive tank 6, storage alkali tank 7, sedimentation basin 8, flocculant storage tank 9, rear reactive tank 10, Sodium carbonate storage tank 11, filter 12, resin tower 13, pure saline slot 14, acid solution holding vessel 16, aqueous slkali holding vessel 17, desalination Water source 18 and filter press 15；Water source 1 is connected to the water inlet of water distributing trough 2, and regulator storage tank 3 is connected to the feed inlet of water distributing trough 2, The water outlet of water distributing trough 2 is connected to the water inlet in salt dissolving pond 4；The feed inlet in salt dissolving pond 4 is connected to solid Yanyuan 5；Salt dissolving pond 4 Liquid outlet is connected to the inlet of preceding reactive tank 6, and the outlet of storage alkali tank 7 is connected to the feed inlet of preceding reactive tank 6, preceding reactive tank 6 Liquid outlet be connected to 8 inlet of sedimentation basin, the outlet of flocculant storage tank 9 is connected to the feed inlet of sedimentation basin 8；Sedimentation basin 8 Liquid outlet is connected to the inlet of rear reactive tank 10；The outlet of sodium carbonate storage tank 11 is connected to the feed inlet of rear reactive tank 10, after The liquid outlet of reactive tank 10 is connected to the inlet of filter 12；The liquid outlet of filter 12 and the inlet of resin tower 13 connect Logical, the liquid outlet of resin tower 13 is connected to pure saline slot 14, acid solution holding vessel 16, aqueous slkali holding vessel 17 and desalination water source 18 With the backwash inlet communication of resin tower 13；The backwash outlets of resin tower 13 are connected to the water inlet of water distributing trough 2；Filter 12 The sewage draining exit of sewage draining exit and sedimentation basin 8 is connected to the inlet of filter press 15, the liquid outlet of filter press 15 and water distributing trough 2 into Mouth of a river connection.

Working principle: from water source 1 to 2 moisturizing of water distributing trough, after water reaches a certain amount of in water distributing trough 2, add into water distributing trough 2 Enter regulator, adjust the pH value of water in water distributing trough 2, make to produce the pH value of water in water distributing trough 2 in 7-9, then industrial water quilt It is sent in salt dissolving pond 4, solid salt is dissolved into salt water, before being then sent to salt water in reactive tank 6, and in forward reaction slot 6 Caustic soda is added, react with magnesium ion and generates magnesium hydroxide and be passed into sedimentation basin 8 after reaction a period of time, and to precipitating Flocculant is added in pond 8, the impurity such as magnesium hydroxide is made to flocculate and precipitates；Salt water in sedimentation basin 8 is then sent to rear reactive tank In 10, and sodium carbonate is added, sodium carbonate is reacted with calcium ion generates calcium carbonate, then passes through filter 12, calcium carbonate etc. is miscellaneous Object, which is filtered out, to be come, and filtered salt water is sent in resin tower 13, is adsorbed the calcium ions and magnesium ions in salt water by resin tower 13 It separates, by resin tower 13, treated that pure salt water is sent in pure saline slot 14 stores；The wherein precipitating in sedimentation basin 8 The sundries that object and filter 12 filter out is passed to filter press 15 and carries out filters pressing formation sludge, is press-filtered out the salt water quilt come It is re-delivered in water distributing trough 2 and reuses, avoid salt water waste；When resin tower 13 complete a certain amount of saline treatment it Afterwards, resin loses the abilities of absorbing calcium ions and magnesium ions in resin tower 13, needs to be passed through acid solution into resin tower 13 and carries out pickling, Acid solution after pickling is complete flows in water distributing trough 2 from the backwash outlets of resin tower 13, after the completion of pickling, then into resin tower 13 lead to Enter desalted water to be rinsed, acid solution remaining in resin tower 13 is rinsed out, the desalted water after flushing is anti-from resin tower 13 Mouth is washed out to flow in water distributing trough 2；Then aqueous slkali is passed through into resin tower 13 again and carries out alkali cleaning, aqueous slkali after alkali cleaning is complete is from tree The backwash outlets of rouge tower 13 flow in water distributing trough 2, after the completion of alkali cleaning, then are passed through desalted water into resin tower 13 and are rinsed, will Remaining aqueous slkali rinses out in resin tower 13, and the desalted water after flushing flows in water distributing trough 2 from the backwash outlets of resin tower 13, Make the resin regeneration reduction for losing suction-operated；Then regulator is added into water distributing trough 2 makes the water in water distributing trough 2 become pH value For the industrial water of 7-9；Lean solution after resin tower 13 regenerates is not necessarily to be discharged into Sewage Disposal, reduces the treating capacity of sewage With the amount of labour of staff；The utility model structure is simple, and Yi Shixian realizes sewage zero-discharge, avoids to environment Pollution.

The above is only the preferred embodiments of the present utility model only, is not intended to limit the utility model, all practical at this Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model Within the scope of shield.

Claims (1)

1. the salt refining system of a kind of electrolysis production chlorine and hydrogen, which is characterized in that it includes water source, water distributing trough, adjusting Agent storage tank, salt dissolving pond, solid Yanyuan, preceding reactive tank, storage alkali tank, sedimentation basin, flocculant storage tank, rear reactive tank, sodium carbonate storage tank, Filter, resin tower, pure saline slot, acid solution holding vessel, aqueous slkali holding vessel, desalination water source and filter press；The water source with The water inlet of the water distributing trough is connected to, and the regulator storage tank is connected to the feed inlet of the water distributing trough, and the water distributing trough goes out The mouth of a river is connected to the water inlet in the salt dissolving pond；The feed inlet in the salt dissolving pond is connected to the solid Yanyuan；The salt dissolving pond Liquid outlet be connected to the inlet of the preceding reactive tank, the outlet of the storage alkali tank connects with the feed inlet of the preceding reactive tank Logical, the liquid outlet of the preceding reactive tank is connected to the sedimentation basin inlet, the outlet of the flocculant storage tank and the precipitating The feed inlet in pond is connected to；The liquid outlet of the sedimentation basin is connected to the inlet of the rear reactive tank；The sodium carbonate storage tank It exports and is connected to the feed inlet of the rear reactive tank, the liquid outlet of the rear reactive tank is connected to the inlet of the filter； The liquid outlet of the filter is connected to the inlet of the resin tower, and the liquid outlet of the resin tower and the pure saline slot connect Logical, the acid solution holding vessel, the aqueous slkali holding vessel and the desalination water source connect with the backwash import of the resin tower It is logical；The backwash outlets of the resin tower are connected to the water inlet of the water distributing trough；The sewage draining exit of the filter and the precipitating The sewage draining exit in pond is connected to the inlet of the filter press, and the water inlet of the liquid outlet of the filter press and the water distributing trough connects It is logical.