CN202156685U

CN202156685U - Tail gas absorbing and purifying device for ammonia water storage tank

Info

Publication number: CN202156685U
Application number: CN2011202176522U
Authority: CN
Inventors: 江晓明; 朱运涛; 许涛; 吴峰; 王磊
Original assignee: SHANGYU DERETIL YUNTAO CHEMICAL CO Ltd
Current assignee: Zhejiang Yuntao Biotechnology Co., Ltd.
Priority date: 2011-06-24
Filing date: 2011-06-24
Publication date: 2012-03-07
Anticipated expiration: 2021-06-24

Abstract

The utility model relates to a tail gas absorbing and purifying device for an ammonia water storage tank. Ammonia water is an easily volatile chemical product and can volatilize faster along with rise of the temperature. The tail gas absorbing and purifying device for the ammonia water storage tank comprises the ammonia water storage tank and a waste gas tower, and is characterized in that a blow-down pipe externally connected to the top of the ammonia water storage tank is connected into a water storage tank and inserted into water, and the top of the water storage tank is connected with the waste gas tower by the aid of another pipeline. By the aid of a water seal device, the tail gas absorbing and purifying device for ammonia water storage tank effectively solves the problem that the ammonia water is easy to volatilize when stored normally and sucked, guarantees concentration of the ammonia water effectively and prevents the ammonia water from volatilizing to pollute the environment. Besides, usage of sulfuric acid in the waste gas tower, discharge of sewage and cost are all reduced.

Description

A kind of tail gas absorbing and purifying device of tank used for storing ammonia

Technical field

The utility model relates to the device for absorbing tail gas of chemical, especially a kind of tail gas absorbing and purifying device of tank used for storing ammonia.

Background technology

Ammoniacal liquor is a kind of highly volatile chemical, along with the temperature build-up volatilization is serious more.In order to prevent ammoniacal liquor volatilization pollutant atmosphere, directly tank used for storing ammonia is connected waste gas absorption tower usually, though can reduce the pollution to environment, it is faster to cause ammonia concn to descend easily.Concentration was 20% when commodity ammoniacal liquor was bought, and through depositing of said apparatus, density loss to 18% after a day was reduced to about 17% after two days, lost bigger.And in the waste gas tower, also will add sulfuric acid and neutralize, the consumption that has increased sulfuric acid has also increased the sewage emissions amount.

The utility model content

The utility model provides a kind of ammoniacal liquor storage tank tail gas absorbing and purifying device to the defective that prior art exists, and can effectively reduce the volatilization of ammoniacal liquor, reduces the pollution to environment, cost-cutting.

For this reason; The utility model is taked following technical scheme: a kind of tail gas absorbing and purifying device of tank used for storing ammonia; Comprise tank used for storing ammonia and waste gas tower, it is characterized in that the external blow-down pipe in top of described tank used for storing ammonia, described blow-down pipe inserts a water tank; This blow-down pipe inserts the underwater, and the top of said water tank is again through another plumbing connection waste gas tower.Under the normality, tank used for storing ammonia remains pressure-fired, and ammoniacal liquor is owing to inserted in the water tank by blow-down pipe, and by water seal, ammoniacal liquor is difficult to outside volatilization.When ammoniacal liquor being beaten to the workshop, storage tank promptly produces negative pressure, and the water in the water tank is sucked in the blow-down pipe; After water was sucted certain altitude, the blow-down pipe bottom broke away from the water surface, at this moment; Air is replenished rapidly in the blow-down pipe, makes the end of blow-down pipe be full of water and air all the time, reduces the ammoniacal liquor volatilization.Charge into the ammonia that a certain amount of sulfuric acid is used for and minority volatilizes in the waste gas tower, need not frequently pay close attention to and add the content of sulfuric acid in the waste gas tower again, effectively cost-cutting also reduces sewage emissions.

The external blow-off line of difference on the pipeline of the upper portion side wall of said water tank and connection water tank and waste gas tower, described blow-off line inserts cesspool.Concentrate and be disposed to cesspool and focus on extracting the sewage that produces in the ammoniacal liquor process.

The utility model adopts water-gland to efficiently solve ammoniacal liquor and stores down and have highly volatile problem during by extraction in normality; Effectively guaranteed the concentration of ammoniacal liquor; Prevent that its outside volatilization from polluting environment; And reduced the use amount of sulfuric acid in the waste gas tower, reduced cost, reduced the sewage emissions amount.

Description of drawings

Fig. 1 is the utility model structural representation;

The specific embodiment

The tail gas absorbing and purifying device of tank used for storing ammonia as shown in Figure 1; The external blow-down pipe 2 in the top of tank used for storing ammonia 1; Blow-down pipe 2 inserts a water tank 3, the more than half tap water 8 of filling in the water tank 3, blow-down pipe 2 insertion underwaters; The top of water tank 3 connects waste gas tower 5, a certain amount of sulfuric acid of packing in the waste gas tower 5 through another pipeline 4 again.The external blow-off line 6 of difference on the pipeline 4 of the upper portion side wall of water tank 3 and connection water tank 3 and waste gas tower 5, blow-off line 6 inserts cesspools 7.

Under the normality, tank used for storing ammonia remains pressure-fired, and ammoniacal liquor is owing to inserted in the water tank by blow-down pipe, and by water seal, ammoniacal liquor is difficult to outside volatilization.When ammoniacal liquor being beaten to the workshop, storage tank promptly produces negative pressure, and the water in the water tank is sucked in the blow-down pipe; After water was sucted certain altitude, the blow-down pipe bottom broke away from the water surface, at this moment; Air is replenished rapidly in the blow-down pipe, makes the end of blow-down pipe be full of water and air all the time, reduces the ammoniacal liquor volatilization.Charge into the ammoniacal liquor that a certain amount of sulfuric acid is used for and minority volatilizes in the waste gas tower, need not frequently pay close attention to and add the content of sulfuric acid in the waste gas tower again, effectively cost-cutting also reduces sewage emissions.

What need particularly point out is; The mode of the foregoing description only limits to describe embodiment; But the utility model is confined to aforesaid way incessantly; And those skilled in the art can modify in the scope that does not break away from the utility model in view of the above easily, so the scope of the utility model should comprise the principle that the utility model discloses and the maximum range of new feature.

Claims

1. the tail gas absorbing and purifying device of a tank used for storing ammonia; Comprise tank used for storing ammonia and waste gas tower; The external blow-down pipe in top that it is characterized in that said tank used for storing ammonia; Described blow-down pipe inserts a water tank, and this blow-down pipe inserts the underwater, and the top of said water tank is again through another plumbing connection waste gas tower.

2. the tail gas absorbing and purifying device of tank used for storing ammonia according to claim 1, it is characterized in that the upper portion side wall of said water tank and connect water tank and the pipeline of waste gas tower on external blow-off line respectively, described blow-off line access cesspool.