Air inlet device of sodium formate synthesis system

Abstract

The utility model relates to the technical field of sodium formate synthesis systems, in particular to a gas inlet device of a sodium formate synthesis system, which comprises a first gas pipeline I and a first gas pipeline II, the first gas pipeline I is connected with a buffer tank, the buffer tank is connected with a gas inlet end of the first gas pipeline II, and a gas outlet end of the first gas pipeline II is connected with a reaction kettle; the gas outlet end of the second gas pipeline is connected with the first gas pipeline II; furthermore, one-way valves are arranged on the first gas pipeline II, the first gas pipeline I and the second gas pipeline; by arranging the buffer tank, the pressure of the carbon monoxide raw material can be regulated to the specified pressure in the buffer tank and then released into the reaction kettle, so that the stability of the pressure of the carbon monoxide raw material is ensured, and the safe and stable operation of the sodium formate synthesis system is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of sodium formate synthesis system, in particular to an air intake device of a sodium formate synthesis system. Background Art

[0002] The sodium formate synthesis method is to produce a dilute sodium formate solution with a mass concentration of 600g / L by carbonyl reaction of carbon monoxide and sodium hydroxide at a pressure of 1.5-2.2Mpa and a temperature of 180-200℃. The dilute sodium formate solution is extracted and dried to obtain dry sodium formate. The existing sodium formate synthesis system directly introduces the carbon monoxide raw material into the reactor, but the pressure of some carbon monoxide raw materials is unstable. Direct introduction into the reactor will affect the pressure in the reactor, which is not conducive to the safe and stable operation of the sodium formate synthesis system. Utility Model Content

[0003] The main purpose of the utility model is to provide an air intake device for a sodium formate synthesis system, so as to solve the problem in the prior art that the pressure of some carbon monoxide raw materials is unstable, which is not conducive to the safe and stable operation of the sodium formate synthesis system.

[0004] In order to achieve the above-mentioned purpose, the utility model provides an air intake device for a sodium formate synthesis system, comprising a first gas pipeline 1 and a first gas pipeline 2, wherein the first gas pipeline 1 is connected to a buffer tank, the buffer tank is connected to the air intake end of the first gas pipeline 2, and the air outlet end of the first gas pipeline 2 is connected to a reactor.

[0005] Furthermore, it also includes a second gas pipeline, and the gas outlet end of the second gas pipeline is connected to the first gas pipeline.

[0006] Furthermore, one-way valves are provided on the first gas pipeline 2, the first gas pipeline 1 and the second gas pipeline.

[0007] Furthermore, the buffer tank is connected to a first pressure gauge and a safety valve, and the safety valve is connected to a venting pipeline.

[0008] Furthermore, both the first gas pipeline 2 and the first gas pipeline 1 are provided with regulating valves and flow meters; the flow of the gas can be controlled by providing the regulating valves and flow meters.

[0009] Furthermore, a second pressure gauge and a shut-off valve are provided on the first gas pipeline.

[0010] Furthermore, bypass pipes are connected in parallel on both sides of the regulating valve on the first gas pipeline 2, and bypass valves are provided on the bypass pipes. Two isolation valves for isolating the regulating valve are also provided on the first gas pipeline 2 near the regulating valve.

[0011] Furthermore, a front valve and a rear valve are respectively provided on the first gas pipeline near the gas inlet and the gas outlet.

[0012] The utility model provides a buffer tank, and can adjust the pressure of the carbon monoxide raw material to a specified pressure in the buffer tank before releasing it into the reactor, thereby ensuring the stability of the pressure of the carbon monoxide raw material and ensuring the safe and stable operation of the sodium formate synthesis system. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings in the specification, which constitute a part of the present application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0014] Figure 1 It is a structural schematic diagram of an embodiment;

[0015] In the figure: 1. First gas pipeline one; 2. First gas pipeline two; 3. Second gas pipeline; 4. Buffer tank; 5. One-way valve; 6. First pressure gauge; 7. Safety valve; 8. Vent pipeline; 9. Regulating valve; 10. Flow meter; 11. Second pressure gauge; 12. Shut-off valve; 13. Bypass pipe; 14. Bypass valve; 15. Isolation valve; 16. Front valve; 17. Rear valve. DETAILED DESCRIPTION

[0016] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0017] like Figure 1 As shown, an air intake device for a sodium formate synthesis system includes a first gas pipeline 1 and a first gas pipeline 2. The first gas pipeline 1 is connected to a buffer tank 4, the buffer tank 4 is connected to the air intake end of the first gas pipeline 2, and the air outlet end of the first gas pipeline 2 is connected to a reactor; it also includes a second gas pipeline 3, and the air outlet end of the second gas pipeline 3 is connected to the first gas pipeline 2.

[0018] The first gas pipeline 2, the first gas pipeline 1 and the second gas pipeline 3 are all provided with a one-way valve 5 to prevent gas backflow; the buffer tank 4 is connected to a first pressure gauge 6 and a safety valve 7, and the safety valve 7 is connected to a venting pipeline 8; the safety valve 7 is used to ensure the safety of the buffer tank 4; the first gas pipeline 2, the first gas pipeline 1 and the first gas pipeline 1 are all provided with a regulating valve 9 and a flow meter 10; the flow of gas can be controlled by setting the regulating valve 9 and the flow meter 10.

[0019] The first gas pipeline 1 is provided with a second pressure gauge 11 and a shut-off valve 12; the second pressure gauge 11 is used to monitor the pressure of the gas in the first gas pipeline 1, thereby controlling the flow of the gas flowing from the first gas pipeline 1 to the buffer tank 4;

[0020] By providing the cut-off valve 12, when the reactor is over-pressurized, the cut-off valve 12 can be manually closed to prevent the reactor from being further over-pressurized.

[0021] A bypass pipe 13 is connected in parallel on both sides of the regulating valve 9 on the first gas pipeline 2, and a bypass valve 14 is provided on the bypass pipe 13. Two isolation valves 15 for isolating the regulating valve 9 are also provided on the first gas pipeline 2 near the regulating valve 9; the bypass pipe 13, the bypass valve 14 and the isolation valve 15 are provided to isolate the regulating valve 9 when the regulating valve 9 needs to be repaired or replaced, so that the regulating valve 9 can be repaired or replaced without stopping the operation of the equipment.

[0022] A front valve 16 and a rear valve 17 are respectively provided near the air inlet and the air outlet on the first gas pipeline 1; by providing the front valve 16 and the rear valve 17, when the air intake device stops, the front valve 16 and the rear valve 17 are closed to cut off the connection with the outside world.

[0023] The working principle of the above embodiment is:

[0024] In this embodiment, there are two sources of carbon monoxide raw materials: one is formic acid tail gas, in which the carbon monoxide concentration is 78%, and the pressure of the formic acid tail gas often fluctuates and is unstable; the other is high-concentration carbon monoxide with a concentration of 97%, and the pressure is relatively stable.

[0025] The formic acid tail gas enters the buffer tank 4 through the first gas pipeline 1, and the pressure of the formic acid tail gas is adjusted to the specified value in the buffer tank 4, and then the formic acid tail gas enters the first gas pipeline 2; the high-concentration carbon monoxide passes through the second gas pipeline 3 and is mixed with the formic acid tail gas in the first gas pipeline 2 and then enters the reactor.

[0026] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An air intake device for a sodium formate synthesis system, characterized in that: The invention comprises a first gas pipeline 1 (1) and a first gas pipeline 2 (2), wherein the first gas pipeline 1 (1) is connected to a buffer tank (4), the buffer tank (4) is connected to the gas inlet end of the first gas pipeline 2 (2), and the gas outlet end of the first gas pipeline 2 (2) is connected to a reaction kettle.

2. The air intake device of the sodium formate synthesis system according to claim 1, characterized in that: It also comprises a second gas pipeline (3), the gas outlet end of the second gas pipeline (3) being connected to the first gas pipeline 2 (2).

3. The air intake device of the sodium formate synthesis system according to claim 2, characterized in that: The first gas pipeline 2 (2), the first gas pipeline 1 (1) and the second gas pipeline (3) are all provided with a one-way valve (5).

4. The air intake device of the sodium formate synthesis system according to claim 1, characterized in that: The buffer tank (4) is connected to a first pressure gauge (6) and a safety valve (7), and the safety valve (7) is connected to a venting pipeline (8).

5. The air intake device of the sodium formate synthesis system according to claim 1, characterized in that: The first gas pipeline 2 (2) and the first gas pipeline 1 (1) are both provided with a regulating valve (9) and a flow meter (10).

6. The air intake device of the sodium formate synthesis system according to claim 1, characterized in that: The first gas pipeline (1) is provided with a second pressure gauge (11) and a shut-off valve (12).

7. The air intake device of the sodium formate synthesis system according to claim 1, characterized in that: A bypass pipe (13) is connected in parallel at positions on both sides of the regulating valve (9) on the first gas pipeline (2), and a bypass valve (14) is provided on the bypass pipe (13). Two isolation valves (15) for isolating the regulating valve (9) are also provided at positions on the first gas pipeline (2) close to the regulating valve (9).

8. The air intake device of the sodium formate synthesis system according to claim 1, characterized in that: A front valve (16) and a rear valve (17) are respectively arranged on the first gas pipeline 1 (1) near the gas inlet and the gas outlet.

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