CN217042006U

CN217042006U - Device for treating high-concentration ammonia gas in ship sewage tail gas

Info

Publication number: CN217042006U
Application number: CN202123009623.XU
Authority: CN
Inventors: 杨露; 王国栋; 邵晓华; 王斌; 马辛; 安子健; 史学增
Original assignee: 704th Research Institute of CSIC
Current assignee: 704th Research Institute of CSIC
Priority date: 2021-12-02
Filing date: 2021-12-02
Publication date: 2022-07-26
Anticipated expiration: 2031-12-02

Abstract

The utility model relates to a treatment device for high-concentration ammonia in ship sewage tail gas, wherein an atomization module is connected with an atomization spray reaction module and is used for atomizing spray liquid into small liquid drops through a spray pump and a nozzle and then conveying the small liquid drops into the atomization spray reaction module; the atomization spraying reaction module consists of two-stage spraying reaction areas and is used for carrying out gas-liquid mass transfer exchange on the sewage tail gas in a mode of countercurrent flow with spraying liquid in the two-stage spraying reaction areas and removing high-concentration ammonia gas in the sewage tail gas through reaction with the spraying liquid; the gas-water separation module is arranged at the top of the atomization spraying reaction module and used for capturing liquid drops wrapped in the sprayed and purified gas. The utility model discloses a set up the atomizing module, reduced the liquid drop that sprays the liquid, increased the double-phase area of contact of gas-liquid, improved mass transfer efficiency, set up the atomizing and spray reaction module, can make sewage tail gas carry out effectual mass transfer exchange and reaction with spraying the liquid, set up the gas-water separation module, can high-efficiently catch the liquid drop of wrapping up in the gas after spraying the purification and holding the arm.

Description

Device for treating high-concentration ammonia gas in ship sewage tail gas

Technical Field

The utility model relates to a processing apparatus of high concentration ammonia is applicable to boats and ships domestic sewage and collects, stores, exhaust tail gas in the processing procedure.

Background

The sewage tail gas refers to tail gas discharged from the vent during the process of collecting, storing and treating the domestic sewage.

The ship domestic sewage usually has higher pollution load than urban domestic sewage, and the released tail gas contains high-concentration ammonia gas (the ammonia gas concentration can reach 435mg/m at most) ³ ) If the sewage tail gas is directly discharged without being effectively treated, the sewage tail gas has the possibility of being sucked back into the cabin by the ventilation system under a specific wind direction, the air quality of the cabin or a deck is influenced, the psychological aversion of crews is caused, the health of the crews is influenced, and the normal work and life of the crews are further influenced.

The technology for removing high-concentration ammonia gas in land engineering mainly adopts a chemical agent spraying method, but the adopted spraying tower has large water consumption and large equipment volume, and common medium-strong acid serving as a spraying agent neutralizes ammonia gas and cannot be directly applied. At present, no treatment device for high-concentration ammonia in sewage and tail gas is available in the field of ships.

Therefore, there is a need for a safe and efficient treatment device for treating high-concentration ammonia gas to purify the tail gas of sewage.

Disclosure of Invention

The utility model aims to provide a processing apparatus of high concentration ammonia in boats and ships sewage tail gas for improve cabin or deck air quality.

In order to solve the technical problem, the utility model adopts the following technical scheme:

a treatment device for high-concentration ammonia in ship sewage tail gas comprises an atomization module, an atomization spraying reaction module and a gas-water separation module, wherein the atomization module is connected with the atomization spraying reaction module and is used for atomizing spray liquid into small liquid drops through a spray pump and a nozzle and then conveying the small liquid drops into the atomization spraying reaction module; the atomization spraying reaction module consists of two stages of spraying reaction areas from bottom to top, and is used for carrying out gas-liquid mass transfer exchange on the sewage tail gas in the two stages of spraying reaction areas in a way of countercurrent with spraying liquid, and reacting with a medicament in the spraying liquid to remove high-concentration ammonia in the sewage tail gas; the gas-water separation module is arranged at the top of the atomization spraying reaction module and used for capturing liquid drops wrapped in the sprayed and purified gas.

Furthermore, the atomization module is composed of a spray pump and a spray liquid box, spray liquid is placed in the spray liquid box and is connected with a fresh water inlet pipe, a water inlet of the spray pump is connected with the spray liquid box, a water outlet of the spray pump is divided into two paths through a three-way joint, and the two paths are respectively connected with nozzles in the two-stage spray reaction area of the atomization spray reaction module.

Further, the spray solution is an acidic solution which can generate a chemical reaction with alkaline ammonia gas.

Further, the two-stage spraying reaction zone of the atomization spraying reaction module is respectively provided with a nozzle, and the bottom of the atomization spraying reaction module is provided with an air inlet and a waste liquid outlet.

Furthermore, a filler is arranged in the gas-water separation module and used for capturing liquid drops wrapped in the gas and enabling the liquid drops to be converged into large liquid drops and then to drop.

The utility model has the advantages that:

1. the atomization module is arranged, so that liquid drops of spraying liquid are reduced, the contact area of gas phase and liquid phase is increased, and the mass transfer efficiency is improved.

2. The atomization spraying reaction module is composed of two stages of spraying reaction areas, and can enable sewage tail gas and spraying liquid to carry out effective mass transfer exchange and reaction.

3. The gas-water separation module is arranged, the filler is arranged in the gas-water separation module, and liquid drops wrapped in the gas after spraying and purifying are efficiently captured.

Drawings

FIG. 1 is a flow chart of the treatment device and the treatment process for high-concentration ammonia in the ship sewage tail gas.

Detailed Description

The utility model provides a processing apparatus of high concentration ammonia in boats and ships sewage tail gas, for making the utility model discloses an advantage, technical scheme are more clear, clear and definite, and it is right to combine specific embodiment below the utility model discloses do detailed description.

As shown in fig. 1, a device for treating high-concentration ammonia in ship sewage and tail gas comprises an atomization module 1, an atomization spray reaction module 2 and a gas-water separation module 3.

The atomization module 1 is connected with the atomization spraying reaction module 2 and is used for atomizing spraying liquid into small liquid drops through a spraying pump and a nozzle and then conveying the small liquid drops into the atomization spraying reaction module. The spray liquid is an acidic solution and can generate chemical reaction with alkaline ammonia gas.

The atomization spraying reaction module 2 consists of two stages of spraying reaction areas from bottom to top, and the sewage and tail gas perform gas-liquid mass transfer exchange with spraying liquid in the two stages of spraying reaction areas in a countercurrent manner and react with a medicament in the spraying liquid to remove high-concentration ammonia in the sewage and tail gas.

The gas-water separation module 3 is arranged at the top of the atomization spraying reaction module 2 and used for capturing liquid drops wrapped in the sprayed and purified gas. In the atomization spraying reaction module, most liquid drops drop downwards under the action of gravity, and tiny liquid drops enter the gas-water separation module along with upward flowing gas, are captured by a filler of the gas-water separation module, and drop after being aggregated into large liquid drops. The filler has the advantages of large gas flux, small airflow resistance, large specific surface area, high gas-water separation efficiency, long service life and the like. The atomizing spraying method is adopted, the diameter of liquid drops is small, the contact area of gas phase and liquid phase is large, and the mass transfer efficiency is high.

Preferably, the atomization module 1 consists of a spray pump 1-2 and a spray liquid tank 1-1, spray liquid is placed in the spray liquid tank 1-1 and is connected with a fresh water inlet pipe, a water inlet of the spray pump 1-2 is connected with the spray liquid tank 1-1, and a water outlet is divided into two paths through a tee joint and is respectively connected with nozzles in a two-stage spray reaction area of the atomization spray reaction module 2.

Preferably, the two-stage spraying reaction zones of the atomization spraying reaction module 2 are respectively provided with a nozzle, and the bottom of the atomization spraying reaction module 2 is provided with an air inlet and a waste liquid outlet.

As the flow chart of the utility model shows, the device comprises an atomizing module which generates small liquid drops, an atomizing spraying module which is used for gas-liquid mass transfer exchange and a gas-water separation technology.

The tail gas discharged by the domestic sewage treatment device is discharged from bottom to top through the atomization spraying module and the gas-water separation module. And the tail gas and the spray liquid are subjected to gas-liquid mass transfer exchange in a two-stage spray reaction area of the atomization spray module and react with the medicament in the solution.

Spraying agents are periodically thrown into the medicine box and automatically dissolved in the using process. The spray liquid enters a two-stage spray reaction area from top to bottom through a spray pump and a nozzle in the atomization module to react with the tail gas, most of liquid drops drop downwards under the action of gravity, and tiny liquid drops enter the gas-water separation module along with the upward flowing gas, are captured by a filler of the gas-water separation module, and drop after being aggregated into large liquid drops.

The following is a detailed description with reference to examples:

TABLE 1 plant operating parameters and Ammonia removal Rate

According to the actual measurement ammonia concentration that obtains in the boats and ships sewage tail gas, adopt this utility model to carry out processing apparatus operating parameter and ammonia clearance as shown in table 1.

Claims

1. The utility model provides a processing apparatus of high concentration ammonia in boats and ships sewage tail gas which characterized in that: the device comprises an atomization module, an atomization spray reaction module and a gas-water separation module, wherein the atomization module is connected with the atomization spray reaction module and is used for atomizing spray liquid into small droplets through a spray pump and a nozzle and then conveying the small droplets into the atomization spray reaction module; the atomization spraying reaction module consists of two stages of spraying reaction areas from bottom to top, and is used for carrying out gas-liquid mass transfer exchange on the sewage tail gas in the two stages of spraying reaction areas in a way of countercurrent with spraying liquid, and reacting with a medicament in the spraying liquid to remove high-concentration ammonia in the sewage tail gas; the gas-water separation module is arranged at the top of the atomization spraying reaction module and used for capturing liquid drops wrapped in the sprayed and purified gas.

2. The device for treating high-concentration ammonia in ship sewage tail gas according to claim 1, characterized in that: the atomization module is composed of a spray pump and a spray liquid box, spray liquid is placed in the spray liquid box and is connected with a fresh water inlet pipe, a water inlet of the spray pump is connected with the spray liquid box, a water outlet of the spray pump is divided into two paths through a three-way joint, and the spray pump are respectively connected with nozzles in two-stage spray reaction areas of the atomization spray reaction module.

3. The device for treating high-concentration ammonia in ship sewage tail gas according to claim 1, characterized in that: the spray solution is an acidic solution which can generate chemical reaction with alkaline ammonia gas.

4. The device for treating high-concentration ammonia in ship sewage tail gas according to claim 1, characterized in that: the two-stage spraying reaction area of the atomization spraying reaction module is respectively provided with a nozzle, and the bottom of the atomization spraying reaction module is provided with an air inlet and a waste liquid outlet.

5. The device for treating high-concentration ammonia in ship sewage tail gas according to claim 1, characterized in that: the gas-water separation module is internally provided with a filler for capturing liquid drops entrained in gas and leading the liquid drops to be converged into large liquid drops and then to drop.