CN215506702U

CN215506702U - Device for producing sodium hypochlorite by using liquid chlorine

Info

Publication number: CN215506702U
Application number: CN202121246300.XU
Authority: CN
Inventors: 李付民
Original assignee: Guangzhou Deqi Environmental Protection Equipment Co ltd
Current assignee: Guangzhou Deqi Environmental Protection Equipment Co ltd
Priority date: 2021-06-04
Filing date: 2021-06-04
Publication date: 2022-01-14
Anticipated expiration: 2031-06-04

Abstract

A device for producing sodium hypochlorite by using liquid chlorine comprises reaction equipment, chlorine absorption equipment and discharge equipment; the reaction equipment comprises a reaction kettle, a first spray reactor arranged on the reaction kettle, a Venturi ejector connected with the reaction kettle, a first submerged pump and an air supplementing channel connected with the first spray reactor, wherein a liquid chlorine input pipe is connected with the reaction kettle, the input end of the first submerged pump is connected with the reaction kettle, and the output end of the first submerged pump is connected with the first spray reactor through a first spray pipe. Liquid chlorine lets in reation kettle, and liquid chlorine gasification produces chlorine, and the gasification in-process needs the heat absorption, consequently can take away partly heat, and chlorine reacts with the sodium hydroxide in the reation kettle and produces sodium hypochlorite, and the produced heat of reaction is partly absorbed gasification by liquid chlorine, reduces the heat dissipation burden, and unreacted chlorine upwards gets into and sprays the reactor, not only absorbs chlorine through spraying the cooling method, helps the heat dissipation moreover, so whole reation kettle can need not additionally to increase cooling arrangement.

Description

Device for producing sodium hypochlorite by using liquid chlorine

Technical Field

The utility model relates to a chemical reaction device, in particular to a device for producing sodium hypochlorite by using liquid chlorine.

Background

In the prior art, chlorine is introduced into a reaction kettle to react with sodium hydroxide to generate sodium hypochlorite, a large amount of heat is released in the reaction process, and special cooling equipment is needed, so that the equipment cost is increased, and if the equipment is overheated, the machine is required to be stopped for heat dissipation, so that potential safety hazards exist, and the production efficiency is low. And liquid chlorine vaporization is an endothermic process.

Disclosure of Invention

The technical problem to be solved by the utility model is to provide a device for producing sodium hypochlorite by using liquid chlorine, no additional cooling equipment and no vaporization heat absorption equipment of a chlorine source are needed, the liquid chlorine vaporization heat absorption and the energy of the heat release process of generating the sodium hypochlorite by the reaction of chlorine and sodium hydroxide are partially offset, and the cost is reduced.

In order to solve the technical problems, the technical scheme of the utility model is as follows: a device for producing sodium hypochlorite by using liquid chlorine comprises reaction equipment, chlorine absorption equipment and discharge equipment which are connected in sequence; the reaction equipment comprises a reaction kettle, a first spraying reactor arranged on the reaction kettle, a Venturi ejector connected with the reaction kettle, a first submerged pump and an air replenishing channel connected with the first spraying reactor, wherein a liquid chlorine input pipe is connected with the reaction kettle, the input end of the first submerged pump is connected with the reaction kettle, and the output end of the first submerged pump is connected with the first spraying reactor through a first spraying pipe; the chlorine absorption equipment comprises more than one chlorine absorption units which are connected in series, each chlorine absorption unit comprises a liquid storage tank, a second spray reactor and a second submerged pump, the second spray reactor and the second submerged pump are arranged on the liquid storage tank, the input end of the second submerged pump is connected with the liquid storage tank, and the output end of the second submerged pump is connected with the second spray reactor through a second spray pipe; the discharge device comprises a cyclone water-vapor separator and a rear fan, the cyclone water-vapor separator comprises a cyclone cylinder and a liquid storage tank, the output end of the chlorine absorption device is connected with one end of a cyclone pipe, the other end of the cyclone pipe extends into the inner side wall of the cyclone cylinder, and the lower end of the cyclone cylinder is connected with the liquid storage tank through a liquid discharge pipe; the input end of the rear fan is connected with the top of the cyclone cylinder through an air inlet pipe, and the output end of the rear fan is connected with the chimney. The principle of the utility model is as follows: liquid chlorine lets in reation kettle, and liquid chlorine gasification produces chlorine, and the gasification in-process needs the heat absorption, consequently can take away partly heat, and chlorine reacts with the sodium hydroxide in the reation kettle and produces sodium hypochlorite, and the produced heat of reaction is partly absorbed gasification by liquid chlorine, reduces the heat dissipation burden, and unreacted chlorine upwards gets into and sprays the reactor, not only absorbs chlorine through spraying the cooling method, helps the heat dissipation moreover, so whole reation kettle can need not additionally to increase cooling arrangement. Unabsorbed chlorine is absorbed by multistage chlorine absorption equipment and then discharged, so that the discharged tail gas is ensured to reach the standard; the tail gas with steam is subjected to cyclone separation, heavier steam is collected in the liquid storage tank, and the gas up to the standard is discharged outside through a chimney.

As an improvement, the reaction kettle is of a vertical or horizontal structure.

As an improvement, the output end of the liquid chlorine input pipe is provided with a self-closing micropore and a liquid distributor with a non-return function, and the self-closing micropore can be opened by the pressure of the liquid chlorine.

As an improvement, a liquid inlet is arranged on the reaction kettle, and the reaction kettle is connected with a pump for feeding NaOH solution.

As an improvement, the air supply channel is U-shaped and comprises an air supply inlet facing downwards and an air supply adjusting valve.

As an improvement, liquid in the liquid storage tank is conveyed to the reaction kettle through a stirring and circulating pump.

As an improvement, a check valve is arranged on the liquid chlorine input pipe.

As an improvement, a chlorine alarm instrument is arranged at the outlet of the chimney.

Compared with the prior art, the utility model has the following beneficial effects:

liquid chlorine lets in reation kettle, and liquid chlorine gasification produces chlorine, and the gasification in-process needs the heat absorption, consequently can take away partly heat, and chlorine reacts with the sodium hydroxide in the reation kettle and produces sodium hypochlorite, and the produced heat of reaction is partly absorbed gasification by liquid chlorine, reduces the heat dissipation burden, and unreacted chlorine upwards gets into and sprays the reactor, not only absorbs chlorine through spraying the cooling method, helps the heat dissipation moreover, so whole reation kettle can need not additionally to increase cooling arrangement.

Drawings

FIG. 1 is a schematic view of the present invention.

Detailed Description

The utility model is further described below with reference to the accompanying drawings.

A device for producing sodium hypochlorite by using liquid chlorine, which comprises reaction equipment, chlorine absorption equipment and discharge equipment which are connected in sequence,

as shown in fig. 1, the reaction equipment comprises a reaction kettle 1, a first spraying reactor 2 arranged on the reaction kettle 1, a venturi ejector 5 connected with the reaction kettle 1, a first submerged pump 6 and an air supplementing channel 8 connected with the first spraying reactor 2. The reaction kettle 1 can be of a vertical or horizontal structure, and the reaction kettle 1 of the embodiment is of a horizontal structure. The liquid chlorine generating equipment is connected with the reaction kettle 1 through a liquid chlorine input pipe 3, namely liquid chlorine is introduced into the reaction kettle 1, and the chlorine generated by the gasification of the liquid chlorine is reacted; the liquid chlorine input pipe 3 is provided with a check valve 4 for preventing liquid chlorine from flowing backwards; the liquid chlorine input pipe 3 is introduced into the bottom of the reaction kettle 1 and is connected with the micropore liquid distributor, when no pressure exists, the micropores are closed, and liquid and gas are uniformly distributed under pressure. The top of the reaction kettle 1 is provided with a liquid inlet, and when the sodium hydroxide solution in the reaction kettle 1 is insufficient, the liquid can be replenished through the liquid inlet. The input end of the first submerged pump 6 is connected with the reaction kettle 1, the output end of the first submerged pump 6 is connected with the first spraying reactor 2 through the first spraying pipe 7, unreacted chlorine enters the first spraying reactor 2 from the reaction kettle 1, and the rising chlorine is absorbed by spraying sodium hydroxide liquid, so that the discharge amount of the chlorine is reduced. The Venturi ejectors 5 are arranged at two ends of the top of the reaction kettle 1, and the Venturi ejectors 5 are used for stirring and air supplementing aeration of the reaction kettle 1. The air supply channel 8 is U-shaped and comprises an air supply inlet and an air supply adjusting valve which face downwards. The reaction kettle 1 is connected with a discharge pump 9, and when the materials are required to be discharged, the liquid in the reaction kettle 1 is pumped away through the discharge pump 9.

As shown in fig. 1, the chlorine absorption equipment includes more than one chlorine absorption units connected in series, and in this embodiment, three chlorine absorption units are provided, so that the reliability of three-stage chlorine removal is higher. The chlorine absorption unit comprises a liquid storage tank 11, a second spraying reactor 14 and a second submerged pump 12, wherein the second spraying reactor 14 and the second submerged pump 12 are arranged on the liquid storage tank 11; the input end of a second submerged pump 12 is connected with the liquid storage tank 11, the output end of the second submerged pump 12 is connected with a second spraying reactor 14 through a second spraying pipe 13, and chlorine is absorbed through spraying; liquid in the liquid storage tank 11 is conveyed to the reaction kettle 1 through the stirring and circulating pump 10, and after the reaction kettle 1 discharges materials, the sodium hydroxide solution in the liquid storage tank 11 is pumped to the reaction kettle 1 through the stirring and circulating pump 10 to react.

As shown in fig. 1, the discharging device includes a cyclone water vapor separator and a rear fan 18, the cyclone water vapor separator includes a cyclone 15 and a liquid storage tank 17, the output end of the chlorine absorbing device is connected with one end of a cyclone tube 16, the other end of the cyclone tube 16 extends into the inner side wall of the cyclone 15, and the lower end of the cyclone tube 15 is connected with the liquid storage tank 17 through a liquid discharge pipe; the input end of the rear fan 18 is connected with the top of the cyclone cylinder 15 through an air inlet pipe, the output end of the rear fan 18 is connected with a chimney 19, and a chlorine alarm instrument 20 is arranged at the outlet of the chimney 19.

The principle of the utility model is as follows: liquid chlorine lets in reation kettle 1, and liquid chlorine gasification produces chlorine, needs the heat absorption among the gasification, consequently can take away partly heat, and chlorine reacts with the sodium hydroxide in reation kettle 1 and produces sodium hypochlorite, and the produced heat of reaction is partly absorbed gasification by liquid chlorine, reduces the heat dissipation burden, and unreacted chlorine upwards gets into spray reactor, not only absorbs chlorine through spraying the cooling method, helps the heat dissipation moreover, so whole reation kettle 1 can need not additionally to increase cooling arrangement. Unabsorbed chlorine is absorbed by multistage chlorine absorption equipment and then discharged, so that the discharged tail gas is ensured to reach the standard; the tail gas with water vapor is subjected to cyclone separation, heavier water vapor is collected in the liquid storage tank, and purer gas is discharged outside through a chimney.

Claims

1. The utility model provides a device with liquid chlorine production sodium hypochlorite which characterized in that: comprises reaction equipment, chlorine absorption equipment and discharge equipment which are connected in sequence; the reaction equipment comprises a reaction kettle, a first spraying reactor arranged on the reaction kettle, a Venturi ejector connected with the reaction kettle, a first submerged pump and an air replenishing channel connected with the first spraying reactor, wherein a liquid chlorine input pipe is connected with the reaction kettle, the input end of the first submerged pump is connected with the reaction kettle, and the output end of the first submerged pump is connected with the first spraying reactor through a first spraying pipe; the chlorine absorption equipment comprises more than one chlorine absorption units which are connected in series, each chlorine absorption unit comprises a liquid storage tank, a second spray reactor and a second submerged pump, the second spray reactor and the second submerged pump are arranged on the liquid storage tank, the input end of the second submerged pump is connected with the liquid storage tank, and the output end of the second submerged pump is connected with the second spray reactor through a second spray pipe; the discharge device comprises a cyclone water-vapor separator and a rear fan, the cyclone water-vapor separator comprises a cyclone cylinder and a liquid storage tank, the output end of the chlorine absorption device is connected with one end of a cyclone pipe, the other end of the cyclone pipe extends into the inner side wall of the cyclone cylinder, and the lower end of the cyclone cylinder is connected with the liquid storage tank through a liquid discharge pipe; the input end of the rear fan is connected with the top of the cyclone cylinder through an air inlet pipe, and the output end of the rear fan is connected with the chimney.

2. The apparatus for producing sodium hypochlorite from liquid chlorine as claimed in claim 1, wherein: the reaction kettle is of a vertical or horizontal structure.

3. The apparatus for producing sodium hypochlorite from liquid chlorine as claimed in claim 1, wherein: the output end of the liquid chlorine input pipe is provided with a self-closing micropore and a liquid distributor with a non-return function, and the self-closing micropore can be opened by the pressure of the liquid chlorine.

4. The apparatus for producing sodium hypochlorite from liquid chlorine as claimed in claim 1, wherein: the reaction kettle is provided with a liquid inlet and is connected with a pump for feeding NaOH solution.

5. The apparatus for producing sodium hypochlorite from liquid chlorine as claimed in claim 1, wherein: the air supply channel is U-shaped and comprises an air supply inlet and an air supply adjusting valve, wherein the air supply inlet faces downwards.

6. The apparatus for producing sodium hypochlorite from liquid chlorine as claimed in claim 1, wherein: and liquid in the liquid storage tank is conveyed to the reaction kettle through the stirring and circulating pump.

7. The apparatus for producing sodium hypochlorite from liquid chlorine as claimed in claim 1, wherein: and a check valve is arranged on the liquid chlorine input pipe.

8. The apparatus for producing sodium hypochlorite from liquid chlorine as claimed in claim 1, wherein: and a chlorine alarm is arranged at the outlet of the chimney.