CN211536548U

CN211536548U - Unpowered ammonia cooler liquid ammonia purifier

Info

Publication number: CN211536548U
Application number: CN201922400599.9U
Authority: CN
Inventors: 殷银华; 余学军; 鲜平; 邓忠杰; 张庚; 周云峰
Original assignee: Hubei Sanning Chemical Co Ltd
Current assignee: Hubei Sanning Chemical Co Ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-09-22
Anticipated expiration: 2029-12-27

Abstract

The utility model relates to an unpowered ammonia cooler liquid ammonia purifier belongs to the purification field of liquid ammonia, the device includes the ammonia cooler, ammonia cooler bottom is through liquid ammonia discharge pipe and liquid ammonia buffer tank bottom intercommunication, liquid ammonia buffer tank bottom is equipped with the blow off pipe, liquid ammonia buffer tank top is equipped with gas ammonia recovery pipeline, is equipped with ammonia cooler pressure relief pipe on the ammonia cooler, and gas ammonia recovery pipeline links to each other with ammonia cooler pressure relief pipe, and liquid ammonia buffer tank bottom is located below the ammonia cooler bottom horizontal plane. And liquid ammonia flows into the bottom of the liquid ammonia buffer tank from the bottom of the ammonia cooler under the action of gravity. The utility model provides an energy saving's liquid ammonia purifier, synthetic ammonia factory only need through simple equipment transformation, and the certain liquid ammonia buffer memory device of collocation can apply to ammonia cooler liquid ammonia purification, has certain economic utilization and worth. The device is convenient to put in and cut off, and does not influence the normal use of the original ammonia cooler.

Description

Unpowered ammonia cooler liquid ammonia purifier

Technical Field

The utility model belongs to the purification field of liquid ammonia, concretely relates to unpowered ammonia cooler liquid ammonia purifier.

Background

The ammonia cooler is a common heat exchange device in the production of synthetic ammonia, the temperature of other media is reduced by using the cold energy of liquid ammonia, the liquid ammonia is heated and evaporated into gaseous ammonia in the ammonia cooler, and the gaseous ammonia enters the ammonia compressor to be recycled into the liquid ammonia for recycling. Because there are trace impurity in the liquid ammonia, in the evaporation process, greasy dirt and impurity constantly gather at ammonia cooler bottom, influence the heat transfer effect, and gas ammonia takes liquid seriously, damages the ammonia compressor.

The traditional liquid ammonia purification adopts steam heating to separate impurities, the separation speed is high, but the temperature of the ammonia gas is increased after the ammonia gas is heated by the steam, the load of an ammonia compressor is increased, and the ammonia compressor is more unfavorable under the conditions that the temperature is high in summer and the load of the ammonia compressor is heavy. Meanwhile, the steam consumption is large, and the energy consumption is large.

Disclosure of Invention

In view of above-mentioned prior art, the utility model provides an unpowered ammonia cooler liquid ammonia purifier for impurity such as oil, residue in the liquid ammonia is detached in the purification of the liquid ammonia of synthetic ammonia system ammonia cooler device, thereby promotes to improve liquid ammonia quality, ammonia cooler cooling efficiency, and the gas ammonia quality of ammonia cooler evaporation.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides an unpowered ammonia cooler liquid ammonia purifier, the device is including the ammonia cooler, the ammonia cooler bottom is through liquid ammonia discharging pipe and liquid ammonia buffer tank bottom intercommunication, liquid ammonia buffer tank bottom is equipped with the blow off pipe, liquid ammonia buffer tank top is equipped with gas ammonia recovery pipeline, is equipped with ammonia cooler pressure release pipe on the ammonia cooler, and gas ammonia recovery pipeline links to each other with ammonia cooler pressure release pipe, and liquid ammonia buffer tank bottom is located below the ammonia cooler bottom horizontal plane. And liquid ammonia flows into the bottom of the liquid ammonia buffer tank from the bottom of the ammonia cooler under the action of gravity.

Preferably, a liquid ammonia discharging valve is arranged on the liquid ammonia discharging pipe, a blow-off valve is arranged on the blow-off pipe, and a gas ammonia valve is arranged on the gas ammonia recovery pipeline.

Preferably, a liquid level meter, a pressure gauge and a first safety valve are arranged on the liquid ammonia buffer tank; the pressure relief pipe of the ammonia cooler is provided with a second safety valve and a second safety valve root valve.

Further preferably, the joint of the gas ammonia recovery pipeline and the ammonia cooler pressure relief pipe is positioned between the second safety valve and the second safety valve root valve.

Preferably, the tank wall of the liquid ammonia buffer tank is of a single-layer structure. The shell is not provided with a heat insulation layer or other heat insulation facilities, and the top is not provided with any sun shading facility.

Preferably, the liquid ammonia buffer tank is a carbon steel tank. The design pressure was 2.5 Mpa.

Preferably, the ammonia cooler is a shell-and-tube heat exchanger. The shell/tube design pressures were 2.5/22MPa, respectively.

The utility model discloses following beneficial effect has:

1. the utility model discloses a pass through the blowdown with the ammonia cooler, utilize solar energy and ambient temperature on every side to evaporate liquid ammonia, reach the purpose of separating pure liquid ammonia. The device does not need steam heating and other power equipment, adopts unpowered liquid ammonia purification, and is economical and environment-friendly.

2. Connect ammonia cooler sewage pipes with this device, be provided with level gauge and manometer in the device, the device does not keep warm outward, lets the device fully expose in the environment, utilizes solar energy and ambient temperature evaporation liquid ammonia. And the liquid ammonia buffer tank periodically discharges sewage.

3. Liquid ammonia of the ammonia cooler flows into the device through the potential difference, is heated and evaporated into gas ammonia and returns to the ammonia cooler, and therefore the purpose of unpowered purification of the liquid ammonia is achieved.

Description of the drawings:

fig. 1 is a schematic diagram of the system structure of the present invention.

Liquid ammonia discharging pipe 1, liquid ammonia discharging valve 2, blow-off valve 3, blow-off pipe 4, level gauge 5, liquid ammonia buffer tank 6, manometer 7, gas ammonia valve 8, gas ammonia recovery pipeline 9, first relief valve 10, ammonia cooler 11, second relief valve 12, ammonia cooler pressure release pipe 13, second relief valve root valve 14, first relief valve root valve 15.

The specific implementation mode is as follows:

the present invention will be further explained with reference to the accompanying drawings.

Example 1

As shown in figure 1, an unpowered ammonia cooler liquid ammonia purifier, the device includes ammonia cooler 11, ammonia cooler 11 bottom is through liquid ammonia discharge pipe 1 and liquid ammonia buffer tank 6 bottom intercommunication, liquid ammonia buffer tank 6 bottom is equipped with blow off pipe 4, 6 tops of liquid ammonia buffer tank are equipped with gas ammonia recovery pipeline 9, link to each other with ammonia cooler pressure release pipe 13, and 6 bottoms of liquid ammonia buffer tank are located below the 11 bottom horizontal planes of ammonia cooler. An ammonia cooler pressure relief pipe 13 is arranged on the ammonia cooler 11, and a second safety valve 12 is arranged on the ammonia cooler pressure relief pipe.

Preferably, the take-off pressure of the second relief valve 12 is set to 0.8 Mpa.

Preferably, a liquid ammonia discharging valve 2 is arranged on the liquid ammonia discharging pipe 1, a drain valve 3 is arranged on the drain pipe 4, and a gas ammonia valve 8 is arranged on the gas ammonia recovery pipeline 9.

Preferably, a liquid level meter 5, a pressure gauge 7, a first safety valve 10 and a first safety valve root valve 15 are arranged on the liquid ammonia buffer tank 6. The take-off pressure of the first relief valve 10 is set to 0.8 Mpa.

Further preferably, the connection between the gas ammonia recovery pipe 9 and the ammonia cooler pressure relief pipe 13 is located between the second safety valve 12 and the second safety valve root valve 14.

Preferably, the tank wall of the liquid ammonia buffer tank 6 is of a single-layer structure.

The utility model discloses during the use: the ammonia cooler 11 passes through the potential difference with the liquid ammonia of impurity, and the gas ammonia valve 8, the first safety valve root valve 15, the second safety valve root valve 14 are all opened fully. Open flowing back ammonia valve 2, get into liquid ammonia buffer tank 6 by flowing back ammonia pipe 1, evaporate into gas ammonia in liquid ammonia buffer tank and pass through gas ammonia valve 8 after, get back to ammonia cooler pressure release pipe 13 through gas ammonia recovery pipeline 9, the impurity of liquid ammonia buffer tank 6 bottom passes through blowoff valve 3, through the periodic blowdown of blow off pipe 4. The liquid ammonia buffer tank 6 is provided with a liquid level meter 5, a pressure gauge 7 and a safety valve 10 and is used for monitoring the liquid level of liquid ammonia in the liquid ammonia buffer tank 6 and the pressure in the liquid ammonia buffer tank 6. The liquid level of the liquid ammonia buffer tank 6 is controlled at 10-60 percent and is controlled by a liquid discharge ammonia valve 2.

The utility model discloses during the time of the outage, arrange liquid ammonia in the liquid ammonia buffer tank 6 earlier to the greatest extent, close flowing back ammonia valve 2 and air ammonia valve 8, open blowoff valve 3, unload the liquid ammonia buffer tank 6 internal pressure to the greatest extent can.

Claims

1. The utility model provides an unpowered ammonia cooler liquid ammonia purifier, includes ammonia cooler (11), its characterized in that, ammonia cooler (11) bottom is through liquid ammonia discharge pipe (1) and liquid ammonia buffer tank (6) bottom intercommunication, liquid ammonia buffer tank (6) top is equipped with gas ammonia recovery pipeline (9), is equipped with ammonia cooler pressure relief pipe (13) on ammonia cooler (11), and gas ammonia recovery pipeline (9) link to each other with ammonia cooler pressure relief pipe (13), and liquid ammonia buffer tank (6) bottom is located below ammonia cooler (11) bottom horizontal plane.

2. The unpowered ammonia cooler liquid ammonia purification device according to claim 1, wherein a liquid ammonia draining valve (2) is arranged on the liquid ammonia draining pipe (1), a drain valve (3) is arranged on the drain pipe (4), and a gas ammonia valve (8) is arranged on the gas ammonia recovery pipeline (9).

3. The unpowered ammonia cooler liquid ammonia purification device as claimed in claim 1, wherein a drain pipe (4) is arranged at the bottom of the liquid ammonia buffer tank (6).

4. The unpowered ammonia cooler liquid ammonia purification device according to claim 1, wherein a liquid level meter (5), a pressure gauge (7) and a first safety valve (10) are arranged on the liquid ammonia buffer tank (6); the ammonia cooler pressure relief pipe (13) is provided with a second safety valve (12) and a second safety valve root valve (14).

5. The unpowered ammonia cooler liquid ammonia purification device according to claim 1, wherein a liquid level meter (5), a pressure gauge (7) and a first safety valve (10) are arranged on the liquid ammonia buffer tank (6); a second safety valve (12) and a second safety valve root valve (14) are arranged on the ammonia cooler pressure relief pipe (13) from bottom to top.

6. The unpowered ammonia cooler liquid ammonia purification device according to claim 5, wherein the connection of the gas ammonia recovery pipeline (9) and the ammonia cooler pressure relief pipe (13) is located between the second safety valve (12) and the second safety valve root valve (14).

7. The unpowered ammonia cooler liquid ammonia purification device as claimed in claim 1, wherein the tank wall of the liquid ammonia buffer tank (6) is of a single-layer structure.

8. The unpowered ammonia cooler liquid ammonia purification device as claimed in claim 1, wherein the liquid ammonia buffer tank (6) is a carbon steel tank.

9. The unpowered ammonia cooler liquid ammonia purification device according to claim 1, wherein the ammonia cooler (11) is a shell-and-tube heat exchanger.