CN210079197U

CN210079197U - Novel ammonia recovery device

Info

Publication number: CN210079197U
Application number: CN201920880994.9U
Authority: CN
Inventors: 苏庆贺; 文德国; 赵洪蕊; 陈加飞; 田宝国
Original assignee: SHANDONG HENGCHANG POLYMER MATERIAL CHEMICAL INDUSTRY TECHNOLOGY Co Ltd
Current assignee: SHANDONG HENGCHANG POLYMER MATERIAL CHEMICAL INDUSTRY TECHNOLOGY Co Ltd
Priority date: 2019-06-13
Filing date: 2019-06-13
Publication date: 2020-02-18
Anticipated expiration: 2029-06-13

Abstract

The utility model discloses a novel ammonia recovery device, which comprises an ammonia water tank; the top of the ammonia water tank is provided with a breather valve; an ammonia gas pipe I is arranged on the breather valve; the ammonia pipe I is communicated with the primary absorption tank, and the tail end of the ammonia pipe I is arranged below the liquid level in the primary absorption tank; the bottom end of the primary absorption tank is communicated with a water pump, and the water pump is communicated with an ammonia water recovery and concentration device; the top end of the primary absorption tank is communicated with the secondary absorption tank, and the tail end of the ammonia gas pipe II is arranged below the liquid level in the secondary absorption tank; the bottom end of the secondary absorption tank is communicated with the primary absorption tank; the upper part of the secondary absorption tank is provided with a water inlet pipe; the top of the secondary absorption tank is provided with a discharge pipe. The utility model has simple and reasonable structure and convenient use; the ammonia gas is recycled twice, so that the utilization effect is good, and the aim of zero-emission recycling is fulfilled. The water seal is utilized to recycle ammonia gas, the structure is simple and effective, and the defects that the ammonia gas is directly emptied to pollute the atmosphere and the resources are wasted are overcome.

Description

Novel ammonia recovery device

Technical Field

The utility model belongs to the technical field of the ammonia recovery plant, especially, relate to a novel ammonia is retrieved device.

Background

In the prior art, ammonia is used for manufacturing ammonia water, nitrogenous fertilizers (urea, ammonium bicarbonate and the like), compound fertilizers, nitric acid, ammonium salts, soda ash and the like, and is widely applied to the fields of chemical industry, light industry, chemical fertilizers, pharmacy, synthetic fibers and the like. Ammonia gas is a colorless gas and has a strong pungent odor, and excessive inhalation of ammonia gas can cause lung swelling and death.

The ammonia water tank that uses in specific production process is used for storing the aqueous ammonia, and traditional ammonia water tank top all sets up the breather valve, and the atmosphere is discharged into to the ammonia mode that adopts direct emptying, has great pollution to the environment, also causes the waste to the resource simultaneously.

In order to change the current situation, some enterprises mostly adopt a hydraulic jet air cyclone for absorbing and treating ammonia in industrial production, and the general treatment process is as follows: and conveying the ammonia gas into the washing tower, and repeatedly spraying and washing the gas by using a water source in the washing tower, so that dust in the gas is washed away and is discharged out of the washing tower. The cleaned gas containing ammonia gas or other components is conveyed from the washing tower to the outside and connected with one or more absorption towers in sequence, the gas received from the washing tower is circularly and repeatedly cleaned by an internal water source, the ammonia gas contained in the gas is absorbed by the water source to be saturated, ammonia water with the concentration of 15-25% is formed and conveyed into a storage tank, and other gases in the absorption towers are discharged to the outside, so that the pollution degree of waste gas, waste water or waste heat and the like in the treatment process to the environment is reduced. But the purchase cost of the equipment is high, the operation process is complicated, and the production cost of enterprises is increased.

Disclosure of Invention

The utility model aims at solving the technical problem that the prior art has a complicated and high-cost recovery plant structure and a complex operation process, and providing a novel ammonia recovery device with a simple structure to overcome the defects of the prior art.

The utility model relates to a novel ammonia recovery device, which comprises an ammonia tank; a breather valve is arranged at the top of the ammonia water tank; the key points are as follows:

an ammonia gas pipe I communicated with the breather valve is arranged on the breather valve; the ammonia pipe I is communicated with the primary absorption tank, and the tail end of the ammonia pipe I is arranged below the liquid level in the primary absorption tank; the bottom end of the primary absorption tank is communicated with a water pump through a first pipeline with a primary gate valve, and the water pump is communicated with an ammonia water recovery and concentration device;

the top end of the primary absorption tank is communicated with the secondary absorption tank through an ammonia pipe II, and the tail end of the ammonia pipe II is arranged below the liquid level in the secondary absorption tank; the bottom end of the secondary absorption tank is communicated with the upper part of the primary absorption tank through a second pipeline with a secondary gate valve;

the upper part of the secondary absorption tank is provided with a water inlet pipe with a water inlet valve; and the top of the secondary absorption tank is provided with a discharge pipe.

Further, the lower part of the secondary absorption tank is provided with an overflow port; the overflow port is communicated with the second pipeline through an overflow pipe with a U-shaped water seal bend.

The utility model has simple and reasonable structure and convenient use; the ammonia gas is recycled twice, so that the utilization effect is good, and the aim of zero-emission recycling is fulfilled. The water seal is utilized to recycle ammonia gas, the structure is simple and effective, and the defects that the ammonia gas is directly emptied to pollute the atmosphere and the resources are wasted are overcome.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the figure 1, an ammonia water tank 2, a breather valve 3, an ammonia pipe I4, a water inlet pipe 5, a water inlet valve 6, an ammonia pipe II 7, a discharge pipe 8, a secondary absorption tank 9, an overflow port 10, a secondary gate valve 11, a second pipeline 12, an overflow pipe 13, a primary absorption tank 14, a primary gate valve 15, a water pump 16 and a first pipeline.

Detailed Description

According to the figure 1, the novel ammonia gas recovery device comprises an ammonia water tank 1; the top of the ammonia water tank 1 is provided with a breather valve 2;

an ammonia pipe I3 communicated with the breather valve 2 is arranged on the breather valve; the ammonia pipe I3 is communicated with the primary absorption tank 13, and the tail end of the ammonia pipe I3 is arranged below the liquid level in the primary absorption tank 13; the bottom end of the primary absorption tank 13 is communicated with a water pump 15 through a first pipeline 16 with a primary gate valve 14, and the water pump 15 is communicated with an ammonia water recovery and concentration device;

the top end of the primary absorption tank 13 is communicated with the secondary absorption tank through an ammonia pipe II 6, and the tail end of the ammonia pipe II 6 is arranged below the liquid level in the secondary absorption tank 8; the bottom end of the secondary absorption tank 8 is communicated with the upper part of the primary absorption tank 13 through a second pipeline 11 with a secondary gate valve 10;

the upper part of the secondary absorption tank 8 is provided with a water inlet pipe 4 with a water inlet valve 5; and a discharge pipe 7 is arranged at the top of the secondary absorption tank 8.

Further, the lower part of the secondary absorption tank 8 is provided with an overflow port 9; the overflow opening 9 is connected to a second pipe 11 via an overflow pipe 12 with a U-shaped water seal bend.

The working principle is as follows: the ammonia gas volatilized from the top of the ammonia water tank enters the top of the primary absorption tank and fully contacts with water below the liquid level for primary absorption, and the residual ammonia gas is separated out and rises through the ammonia pipe II to enter the secondary absorption tank after absorption. And the tail end of the ammonia pipe II is arranged below the liquid level and is fully contacted with desalted water for secondary absorption, the ammonia gas is completely absorbed after the secondary absorption, and the residual trace hydrogen-nitrogen impurity gas is discharged through a discharge pipe at the top.

In the demineralized water continuous addition secondary absorption jar, the overflow mouth of secondary absorption jar lower part passes through the overflow pipe and gets into primary absorption jar to realize the cyclic absorption of demineralized water in the secondary absorption jar, the overflow pipe sets up U type water seal elbow and does the water seal. The ammonia water in the primary absorption tank finally enters an ammonia water recovery and concentration device for recovery and concentration through a first pipeline and a water pump at the bottom. The bottom of the secondary absorption tank is provided with a water outlet for maintenance or standby and is in a normally closed state.

Claims

1. A novel ammonia recovery device comprises an ammonia tank (1); a breather valve (2) is arranged at the top of the ammonia water tank (1); the method is characterized in that:

an ammonia gas pipe I (3) communicated with the breather valve (2) is arranged on the breather valve; the ammonia pipe I (3) is communicated with the primary absorption tank (13), and the tail end of the ammonia pipe I (3) is arranged below the liquid level in the primary absorption tank (13); the bottom end of the primary absorption tank (13) is communicated with a water pump (15) through a first pipeline (16) with a primary gate valve (14), and the water pump (15) is communicated with an ammonia water recovery and concentration device;

the top end of the primary absorption tank (13) is communicated with the secondary absorption tank through an ammonia pipe II (6), and the tail end of the ammonia pipe II (6) is arranged below the liquid level in the secondary absorption tank (8); the bottom end of the secondary absorption tank (8) is communicated with the upper part of the primary absorption tank (13) through a second pipeline (11) with a secondary gate valve (10);

the upper part of the secondary absorption tank (8) is provided with a water inlet pipe (4) with a water inlet valve (5); and a discharge pipe (7) is arranged at the top of the secondary absorption tank (8).

2. The novel ammonia recovery device as claimed in claim 1, wherein the lower part of the secondary absorption tank (8) is provided with an overflow port (9); the overflow port (9) is communicated with the second pipeline (11) through an overflow pipe (12) with a U-shaped water seal bend.