CN209957373U - Equipment for producing sodium chlorite based on chloric acid and hydrogen peroxide - Google Patents

Abstract

The utility model discloses a device for producing sodium chlorite based on chloric acid and hydrogen peroxide, which consists of a raw material crystallization treatment system, a chlorine dioxide preparation system and a sodium chlorite preparation system; the raw material crystallization treatment system comprises an evaporation crystallizer, a heater, a filtering device and a drying device; the chlorine dioxide preparation system comprises a generator, wherein the inlet end of the generator is connected with a hydrogen peroxide water pipe and a raw material feeding pipe; the sodium chlorite preparation system comprises an absorption tower, a cooler and a sodium chlorite storage tank, wherein the bottom of the absorption tower is connected with a chlorine dioxide exhaust pipe, the top of the absorption tower is connected with an absorption tower hydrogen peroxide pipe, the middle part of the absorption tower is connected with an alkali liquor pipe, the bottom of the absorption tower is connected with a sodium chlorite pump, the outlet of the sodium chlorite pump is divided into two paths, one path is connected with the sodium chlorite storage tank, the other path is connected with the cooler, the outlet of the cooler is connected with the alkali liquor pipe, and the outlet of the top of the absorption tower is connected with. The utility model not only reduces the usage amount of sodium chlorate and sulfuric acid, but also has no waste liquid discharge.

Description

Equipment for producing sodium chlorite based on chloric acid and hydrogen peroxide

Technical Field

The utility model belongs to the technical field of sodium chlorite preparation, in particular to a device for producing sodium chlorite based on chloric acid and hydrogen peroxide.

Background

Sodium chlorite is a highly effective oxidant, has a wide range of applications, and is mainly used for cotton spinning, flax, paper pulp bleaching, food disinfection, water treatment, sterilization and algae removal, fish drug production, etc. Sodium chlorite products are both solid and liquid, but liquids are used in many applications primarily because of the high risk of solid products and the low risk of liquid products. The content of the liquid product used at present is generally 20-30% (w/w), the liquid product is stable at normal temperature, and the shelf life can reach more than 12 months generally.

At present, the most common production mode for producing sodium chlorite by preparing chlorine dioxide gas by using a horizontal generator in domestic industrial production of sodium chlorite has the problems that acidic waste liquid generated by a chlorine dioxide preparation system is directly discharged to the outside to pollute the environment, sodium chlorate, sulfuric acid and a byproduct mirabilite in waste acid cannot be effectively utilized, and the like.

Therefore, it is necessary to develop a sodium chlorite production apparatus which has low raw material consumption and is environmentally friendly.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved in the utility model is to provide a low-consumption and environment-friendly equipment for producing sodium chlorite based on chloric acid and hydrogen peroxide, the equipment is provided with an evaporative crystallizer, a mirabilite filtering and drying device and a steam condensing device in the raw material processing procedure, so that the mirabilite originally generated in a chlorine dioxide generator is generated in the raw material processing procedure in advance, and becomes anhydrous sodium sulphate which can be sold out after separation and drying; meanwhile, the reaction liquid after the reaction is sent back to an evaporation crystallizer for evaporation and concentration, so that Na in the reaction residual liquid⁺、SO₄ ^2-、H⁺、ClO₃ ^2-Can be recycled, not only reduces the usage amount of sodium chlorate and sulfuric acid, but also has no waste liquid to be discharged.

The utility model discloses solve above-mentioned technical problem with following technical scheme:

the utility model relates to an equipment based on chloric acid and hydrogen peroxide solution production sodium chlorite, by raw materials crystallization processing system, chlorine dioxide preparation system and sodium chlorite preparation system constitute, raw materials crystallization processing system includes evaporation crystallizer 1, heater 2, filter equipment 5, drying device 6, be connected by upper circulating pipe 19 and lower circulating pipe 21 between evaporation crystallizer 1 and the heater 2, the bottom of evaporation crystallizer 1 is through the entry end of lower circulating pipe 21 connection heater 2, the exit end of heater 2 is through upper circulating pipe 19 connection evaporation crystallizer 1, upper circulating pipe 19 and lower circulating pipe 21 connect into sulfuric acid pipe 20 and chloric acid nanotube 22 respectively, and install circulating pump 3 on the lower circulating pipe 21, the entry end of filter equipment 5 is connected with lower circulating pipe 21 through feed pipe 23, and install filter equipment feed pump 4 on this feed pipe 23, drying device 6 is connected to filter equipment 5's discharge gate, a liquid outlet of the filtering device 5 is connected with a lower circulating pipe 21 through a filtrate return pipe 32, and a top outlet of the evaporative crystallizer 1 is sequentially connected with a condenser 15, a condensate water tank 16 and a vacuum pump 17 through a steam exhaust pipe 31; the chlorine dioxide preparation system comprises a generator 8, wherein the raw material inlet end of the generator 8 is connected with a hydrogen peroxide pipe 25 and a raw material feed pipe 24, the other end of the raw material feed pipe 24 is connected with a clear liquid outlet at the upper part of the evaporative crystallizer 1, a clear liquid pump 7 is arranged on the raw material feed pipe 24, the bottom of the generator 8 is connected with an air compressor 9 through an air pipe 27, the liquid outlet of the generator 8 is connected with a lower circulating pipe 21 of the raw material crystallization treatment system through a reaction liquid return pipe 28, a reaction liquid return pump 10 is arranged on the reaction liquid return pipe 28, and the gas outlet of the generator 8 is discharged to a sodium chlorite preparation system through a chlorine dioxide exhaust pipe 26; the sodium chlorite preparation system comprises an absorption tower 11, a cooler 12 and a sodium chlorite storage tank 14, wherein the bottom inlet of the absorption tower 11 is connected with a chlorine dioxide exhaust pipe 26, the top inlet of the absorption tower 11 is connected with an absorption tower hydrogen peroxide pipe 29, the middle inlet of the absorption tower 11 is connected with an alkali liquor pipe 30, the bottom outlet of the absorption tower 11 is connected with a sodium chlorite pump 13, the outlet of the sodium chlorite pump 13 is divided into two paths, one path is connected with the sodium chlorite storage tank 14, the other path is connected with the cooler 12, the outlet of the cooler 12 is connected with the alkali liquor pipe 30, and the top outlet of the absorption tower 11 is connected with a tail gas fan 18.

The generator is a horizontal generator.

The utility model discloses a raw materials carries out the double decomposition reaction (see equation 1) earlier in the evaporative crystallizer before getting into generator preparation chlorine dioxide to utilize the lower characteristic of glauber's salt solubility, the glauber's salt crystal solid is appeared in the heating concentration. The clear solution after evaporative crystallization contains chloric acid (containing a small amount of Na) as the main component⁺、SO₄ ^2-) And chlorine dioxide can be generated after the chlorine dioxide enters a generator and reacts with hydrogen peroxide (see reaction formula 2).

(1)H₂SO₄+2NaClO₃→Na₂SO₄+2HClO₃

(2)2HClO₃+H₂O₂→ClO₂+2H₂O+O₂

The reaction solution after the reaction mainly comprises water and a small amount of Na⁺、SO₄ ^2-And unreacted HClO₃And the concentrated solution is pumped back to the evaporative crystallizer for concentration and recycling. The system does not produce waste liquid and solid waste.

The utility model discloses following beneficial effect has:

1. the evaporation crystallizer, the mirabilite filtering and drying device and the steam condensing device are arranged in the raw material treatment process, so that the mirabilite originally generated in the chlorine dioxide generator is generated in the raw material treatment process in advance, and the mirabilite is separated and dried to become the sold anhydrous sodium sulphate.

2. The reaction liquid after the reaction is sent back to an evaporation crystallizer for evaporation and concentration, so that Na in the reaction residual liquid⁺、SO₄ ^2-、H⁺、ClO₃ ^2-Can be recycled, not only reduces the usage amount of sodium chlorate and sulfuric acid, but also has no waste liquid to be discharged.

Drawings

Fig. 1 is an overall structural view of a device for producing sodium chlorite based on chloric acid and hydrogen peroxide according to the present invention.

In fig. 1: 1. an evaporative crystallizer; 2. a heater; 3. a circulation pump; 4. a filter feed pump; 5. a filtration device; 6. a drying device; 7. a clarified liquid pump; 8. a generator; 9. an air compressor; 10. a reaction liquid reflux pump; 11. an absorption tower; 12. a cooler; 13. a sodium chlorite pump; 14. a sodium chlorite storage tank; 15. a condenser; 16. a condensate tank; 17. a vacuum pump; 18. a tail gas fan; 19. an upper circulation pipe; 20. a sulfuric acid pipe; 21. a lower circulation pipe; 22. a sodium chlorate tube; 23. a mirabilite feed pipe; 24. a raw material feed pipe; 25. a generator hydrogen peroxide pipe; 26. a chlorine dioxide exhaust pipe; 27. an air tube; 28. a reaction liquid reflux pipe; 29. an absorption tower hydrogen peroxide pipe; 30. an absorption tower lye pipe; 31. a steam exhaust pipe; 32. a filtrate return pipe.

Detailed Description

The present invention will be described in detail with reference to the drawings and examples, which are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1, the utility model relates to an apparatus for producing sodium chlorite based on chloric acid and hydrogen peroxide solution comprises an evaporative crystallizer 1, a heater 2, a circulating pump 3, a filter device feeding pump 4, a filter device 5, a drying device 6, a clarified liquid pump 7, a generator 8, an air compressor 9, a reaction liquid reflux pump 10, an absorption tower 11, a cooler 12, a sodium chlorite pump 13, a sodium chlorite storage tank 14, a condenser 15, a condensed water tank 16, a vacuum pump 17 and a tail gas fan 18; an evaporative crystallizer 1, a heater 2, a circulating pump 3, an upper circulating pipe 19, a lower circulating pipe 21, a sulfuric acid pipe 20 and a sodium chlorate pipe 22 in the device are connected to form a raw material evaporative crystallization circulating loop, and the raw material evaporative crystallization circulating loop, a filter device feeding pump 4, a filter device 5, a drying device 6, a feeding pipe 23, a condenser 15, a condensate water tank 16, a vacuum pump 17 and a steam exhaust pipe 31 form a raw material crystallization treatment system; the generator 8, the air compressor 9, the reaction liquid reflux pump 10, the raw material feeding pipe 24, the hydrogen peroxide water pipe 25 and the reaction liquid reflux pipe 28 form a chlorine dioxide preparation system together; the absorption tower 11, the sodium chlorite pump 13, the cooler 12, the sodium chlorite storage tank 14, the tail gas fan 18, the hydrogen peroxide pipe 29, the alkali liquor pipe 30 and the like form a sodium chlorite preparation system.

The raw material crystallization treatment system comprises an evaporative crystallizer 1, a heater 2, a filtering device 5 and a drying device 6, wherein the evaporative crystallizer 1 is connected with the heater 2 through an upper circulating pipe 19 and a lower circulating pipe 21, the bottom of the evaporative crystallizer 1 is connected with the inlet end of the heater 2 through the lower circulating pipe 21, the outlet end of the heater 2 is connected with the evaporative crystallizer 1 through the upper circulating pipe 19, the upper circulating pipe 19 and the lower circulating pipe 21 are respectively connected with a sulfuric acid pipe 20 and a chloric acid accommodating pipe 22, a circulating pump 3 is arranged on the lower circulating pipe 21, the inlet end of the filtering device 5 is connected with the lower circulating pipe 21 through a feeding pipe 23, a filtering device feeding pump 4 is arranged on the feeding pipe 23, the discharge port of the filtering device 5 is connected with the drying device 6, the liquid outlet of the filtering device 5 is connected with the lower circulating pipe 21 through a filtrate return pipe 32, the top, A condensate tank 16 and a vacuum pump 17.

The chlorine dioxide preparation system comprises a generator 8, wherein the raw material inlet end of the generator 8 is connected with a hydrogen peroxide pipe 25 of the generator and a raw material feeding pipe 24, the other end of the raw material feeding pipe 24 is connected with a clear liquid outlet at the upper part of an evaporative crystallizer 1, a clear liquid pump 7 is arranged on the raw material feeding pipe 24, the bottom of the generator 8 is connected with an air compressor 9 through an air pipe 27, the liquid outlet of the generator 8 is connected with a lower circulating pipe 21 of a raw material crystallization treatment system through a reaction liquid return pipe 28, a reaction liquid return pump 10 is arranged on the reaction liquid return pipe 28, and the gas outlet of the generator 8 is discharged to a sodium chlorite preparation system through a chlorine dioxide exhaust pipe 26.

The sodium chlorite preparation system comprises an absorption tower 11, a cooler 12 and a sodium chlorite storage tank 14, wherein the bottom inlet of the absorption tower 11 is connected with a chlorine dioxide exhaust pipe 26, the top inlet of the absorption tower 11 is connected with an absorption tower hydrogen peroxide pipe 29, the middle inlet of the absorption tower 11 is connected with an absorption tower alkali liquor pipe 30, the bottom outlet of the absorption tower 11 is connected with a sodium chlorite pump 13, the outlet of the sodium chlorite pump 13 is divided into two paths, one path is connected with the sodium chlorite storage tank 14, the other path is connected with the cooler 12, the outlet of the cooler 12 is connected with the alkali liquor pipe 30, and the top outlet of the absorption tower 11 is connected with a tail gas fan 18.

The utility model discloses a generator 8 be horizontal generator.

The following is a specific example of the use of the above apparatus for the preparation of 15t/d sodium chlorite:

example 1, the specific procedure was as follows:

step 1, respectively putting raw materials of sulfuric acid and sodium chlorate into an evaporation crystallizer through a sulfuric acid pipe and a sodium chlorate pipe, heating the raw materials by a heater, carrying out double decomposition reaction on the two raw materials in the evaporation crystallizer to separate out mirabilite crystals, and evaporating redundant moisture of the raw materials; then pumping the raw material solution containing crystals at the bottom of the evaporative crystallizer to a filtering device by using a feed pump for filtering, drying a filtered filter cake in a drying device to prepare anhydrous sodium sulphate (sold out), and returning filtrate to the evaporative crystallizer for recycling, wherein in the step, the temperature in the evaporative crystallizer is controlled at 65 ℃, and the vacuum degree is controlled at-80 Kpa;

step 2, pumping out water vapor evaporated by the evaporation crystallizer by a vacuum pump, condensing the water vapor by a condenser, and storing the water vapor in a condensate water tank for dissolving sodium chlorate, wherein the temperature of condensate liquid cooled by the condenser is controlled at 37 ℃;

step 3, pumping clear liquid at the upper part of the evaporative crystallizer to a generator by a clear liquid pump, reacting the clear liquid with hydrogen peroxide to prepare chlorine dioxide, adding compressed air at the bottom of the generator for aeration, separating the chlorine dioxide and sending the chlorine dioxide to an absorption tower; in the step, the generator is added with steam to gradually increase the reaction temperature from 40 ℃ to 80 ℃; and the reaction liquid after the reaction of the generator is sent back to the evaporation crystallizer by a reaction liquid reflux pump for concentration and recycling;

step 4, absorbing the chlorine dioxide gas in an absorption tower by added hydrogen peroxide and alkali liquor to prepare a sodium chlorite solution; the sodium chlorite pump pumps the solution, a part of the solution circulates back to the absorption tower to be mixed with hydrogen peroxide and alkali liquor and then further absorb chlorine dioxide, and a part of the solution is pumped to the sodium chlorite storage tank to be stored; and (3) pumping and evacuating tail gas generated after absorption through a tail gas fan, wherein in the step, the temperature in the absorption tower is controlled at 35 ℃, and the concentration of the prepared sodium chlorite solution can be controlled at 30% (w/w) by adjusting the concentrations of the added alkali and hydrogen peroxide.

Adopt the utility model discloses the result of equipment: the consumption of sodium chlorate is 1.295t and the consumption of sulfuric acid is 0.71t per ton of sodium chlorite (100%), which is respectively 0.015t and 1.2t less than the traditional mode of producing sodium chlorite by adopting a horizontal generator to prepare chlorine dioxide.

Example 2, the specific procedure was as follows:

step 1, respectively putting raw materials of sulfuric acid and sodium chlorate into an evaporation crystallizer through a sulfuric acid pipe and a sodium chlorate pipe, heating the raw materials through a heater, carrying out double decomposition reaction on the two raw materials in the evaporation crystallizer to separate out mirabilite crystals, and evaporating redundant moisture of the raw materials; then pumping the raw material solution containing crystals at the bottom of the evaporative crystallizer to a filtering device by using a feed pump for filtering, drying a filtered filter cake in a drying device to prepare anhydrous sodium sulphate (sold out), and returning filtrate to the evaporative crystallizer for recycling, wherein in the step, the temperature in the evaporative crystallizer is controlled at 67 ℃, and the vacuum degree is controlled at-81 Kpa;

step 2, pumping out water vapor evaporated by the evaporation crystallizer by a vacuum pump, condensing the water vapor by a condenser, and storing the water vapor in a condensate water tank for dissolving sodium chlorate, wherein the temperature of condensate liquid cooled by the condenser is controlled at 36 ℃;

step 3, pumping clear liquid at the upper part of the evaporative crystallizer to a generator by a clear liquid pump, reacting the clear liquid with hydrogen peroxide to prepare chlorine dioxide, adding compressed air at the bottom of the generator for aeration, removing the chlorine dioxide and sending the chlorine dioxide to an absorption tower, and in the step, increasing the reaction temperature of the generator from 47.5 ℃ to 83 ℃ step by adding steam; and the reaction liquid after the reaction of the generator is sent back to the evaporation crystallizer by a reaction liquid reflux pump for concentration and recycling;

step 4, absorbing the chlorine dioxide gas in an absorption tower by added hydrogen peroxide and alkali liquor to prepare a sodium chlorite solution; the sodium chlorite pump pumps the solution, a part of the solution circulates back to the absorption tower to be mixed with hydrogen peroxide and alkali liquor and then further absorb chlorine dioxide, and a part of the solution is pumped to the sodium chlorite storage tank to be stored; and tail gas generated after absorption is pumped out and exhausted by a tail gas fan, wherein the temperature in the absorption tower is controlled at 34 ℃, and the concentration of the prepared sodium chlorite solution can be controlled at 30.2% by adjusting the concentration of the added alkali and hydrogen peroxide.

Adopt the utility model discloses the result of equipment: the consumption of sodium chlorate is 1.296t and the consumption of sulfuric acid is 0.70t per ton of sodium chlorite (100%), which is respectively 0.014t and 1.21t less than the traditional mode of producing sodium chlorite by adopting a horizontal generator to prepare chlorine dioxide.

Example 3, the specific procedure was as follows:

step 1, respectively putting raw materials of sulfuric acid and sodium chlorate into an evaporation crystallizer through a sulfuric acid pipe and a sodium chlorate pipe, heating the raw materials through a heater, carrying out double decomposition reaction on the two raw materials in the evaporation crystallizer to separate out mirabilite crystals, and evaporating redundant moisture of the raw materials; then pumping the raw material solution containing crystals at the bottom of the evaporative crystallizer to a filtering device by using a feed pump for filtering, drying a filter cake obtained by filtering to prepare anhydrous sodium sulphate (sold out), and returning filtrate to the evaporative crystallizer for recycling, wherein in the step, the temperature in the evaporative crystallizer is controlled at 68 ℃ and the vacuum degree is controlled at-82 Kpa.

Step 2, pumping out water vapor evaporated by the evaporation crystallizer by a vacuum pump, condensing the water vapor by a condenser, and storing the water vapor in a condensate water tank for dissolving sodium chlorate, wherein the temperature of condensate liquid cooled by the condenser is controlled at 35 ℃;

step 3, pumping clear liquid at the upper part of the evaporative crystallizer to a generator by a clear liquid pump, reacting the clear liquid with hydrogen peroxide to prepare chlorine dioxide, adding compressed air at the bottom of the generator for aeration, separating the chlorine dioxide and delivering the chlorine dioxide to an absorption tower, wherein in the step, the generator is added with steam to gradually increase the reaction temperature from 50 ℃ to 85 ℃, and the reaction liquid reacted in the generator is returned to the evaporative crystallizer by a reaction liquid reflux pump for concentration and recycling;

step 4, absorbing the chlorine dioxide gas in an absorption tower by added hydrogen peroxide and alkali liquor to prepare a sodium chlorite solution; the sodium chlorite pump pumps the solution, a part of the solution circulates back to the absorption tower to be mixed with hydrogen peroxide and alkali liquor and then further absorb chlorine dioxide, and a part of the solution is pumped to the sodium chlorite storage tank to be stored; and tail gas generated after absorption is pumped out and exhausted by a tail gas fan, wherein the temperature in the absorption tower is controlled at 33 ℃, and the concentration of the prepared sodium chlorite solution can be controlled at 30.2% by adjusting the concentration of the added alkali and hydrogen peroxide.

Adopt the utility model discloses the result of equipment is: the consumption of sodium chlorate per ton of sodium chlorite (100%) is 1.294t, the consumption of sulfuric acid is 0.705t, and the consumption is respectively 0.016t and 1.205t less than that of the traditional mode for producing sodium chlorite by adopting a horizontal generator to prepare chlorine dioxide.

Before the preparation of chlorine dioxide, the utility model exchanges the ions in the raw materials of sulfuric acid and sodium chlorate through the evaporation crystallizer, and the mirabilite in the solution is crystallized and separated out through heating and evaporation, thereby achieving the purpose of separating and drying the mirabilite in advance; the residual liquid after the reaction of the generator is pumped back to the evaporation crystallizer for recycling, so that the consumption of sodium chlorate and sulfuric acid is reduced, and no waste is discharged.

The present invention has been described in detail with reference to the embodiments, and although the present invention can be modified or improved according to the engineering implementation, it is obvious to those skilled in the art that the modifications made without creative labor are included in the protection scope of the present invention.

Claims (2)

1. A device for producing sodium chlorite based on chloric acid and hydrogen peroxide is characterized by comprising a raw material crystallization treatment system, a chlorine dioxide preparation system and a sodium chlorite preparation system, wherein the raw material crystallization treatment system comprises an evaporation crystallizer (1), a heater (2), a filtering device (5) and a drying device (6), the evaporation crystallizer (1) is connected with the heater (2) through an upper circulating pipe (19) and a lower circulating pipe (21), the bottom of the evaporation crystallizer (1) is connected with the inlet end of the heater (2) through the lower circulating pipe (21), the outlet end of the heater (2) is connected with the evaporation crystallizer (1) through the upper circulating pipe (19), the upper circulating pipe (19) and the lower circulating pipe (21) are respectively connected with a sulfuric acid pipe (20) and a chloric acid nano pipe (22), the lower circulating pipe (21) is provided with a circulating pump (3), the inlet end of the filtering device (5) is connected with the lower circulating pipe (21) through a feeding pipe (23), a filter device feeding pump (4) is installed on the feeding pipe (23), a discharge hole of the filter device (5) is connected with the drying device (6), a liquid outlet of the filter device (5) is connected with the lower circulating pipe (21) through a filtrate return pipe (32), and a top outlet of the evaporative crystallizer (1) is sequentially connected with a condenser (15), a condensate water tank (16) and a vacuum pump (17) through a steam exhaust pipe (31); the chlorine dioxide preparation system comprises a generator (8), wherein the raw material inlet end of the generator (8) is connected with a hydrogen peroxide pipe (25) and a raw material feeding pipe (24), the other end of the raw material feeding pipe (24) is connected with a clear liquid outlet at the upper part of an evaporative crystallizer (1), a clear liquid pump (7) is arranged on the raw material feeding pipe (24), the bottom of the generator (8) is connected with an air compressor (9) through an air pipe (27), the liquid outlet of the generator (8) is connected with a lower circulating pipe (21) of the raw material crystallization treatment system through a reaction liquid return pipe (28), the reaction liquid return pipe (28) is provided with a reaction liquid return pump (10), and the gas outlet of the generator (8) is discharged to a sodium chlorite preparation system through a chlorine dioxide exhaust pipe (26); the sodium chlorite preparation system comprises an absorption tower (11), a cooler (12) and a sodium chlorite storage tank (14), a chlorine dioxide exhaust pipe (26) is connected to a bottom inlet of the absorption tower (11), a top inlet of the absorption tower (11) is connected with an absorption tower hydrogen peroxide pipe (29), a middle inlet of the absorption tower (11) is connected with a lye pipe (30), a bottom outlet of the absorption tower (11) is connected with a sodium chlorite pump (13), an outlet of the sodium chlorite pump (13) is divided into two paths, one path is connected with the sodium chlorite storage tank (14), the other path is connected with the cooler (12), an outlet of the cooler (12) is connected with the lye pipe (30), and a top outlet of the absorption tower (11) is connected with a tail gas fan (18).

2. The apparatus for producing sodium chlorite based on chloric acid and hydrogen peroxide as claimed in claim 1, wherein: the generator is a horizontal generator.

Images