Carbonization process alkali liquor backflow prevention system

Abstract

The utility model relates to the technical field of gas-liquid separation in industrial production devices, in particular to an alkali liquor backflow prevention system in a carbonization process. Comprising a gas-liquid separator, a mother liquor barrel, primary alkali liquor separation equipment, a tail gas main conveying pipe and a carbonized tail gas conveying pipe, wherein the tail gas main conveying pipe is respectively communicated with the gas-liquid separator and the primary alkali liquor separation equipment as well as the gas inlet end of the primary alkali liquor separation equipment; the carbonized tail gas conveying pipe is communicated with the gas outlet end of the gas-liquid separator; the alkali liquor conveying pipes are respectively communicated with the water outlet ends of the gas-liquid separator and the primary alkali liquor separation equipment, the connecting pipes are communicated between the two alkali liquor conveying pipes and the mother liquor barrel, and the valves are respectively arranged on the tail gas main conveying pipe, the carbonized tail gas conveying pipe and the connecting pipes; therefore, the production process for stabilizing subsequent treatment of the carbonized tail gas is achieved, and potential safety hazards caused by alkali liquor entrained in the carbonized tail gas are eliminated.

Description

Technical Field

[0001] The utility model relates to the technical field of gas-liquid separation in industrial production devices, and particularly relates to a lye anti-backflow system for a carbonization process. Background Art

[0002] At present, the main methods for industrial production of soda ash are the ammonia-soda method and the combined soda method. The combined soda method uses salt, ammonia, and carbon dioxide by-produced in the synthetic ammonia industry as raw materials to produce soda ash and ammonium chloride simultaneously, that is, jointly produce soda ash and ammonium chloride, which is abbreviated as "combined soda production" or "combined soda". The combined soda production can be divided into carbonization, filtration, evaporation and absorption, mother liquor exchange, compression, light ash calcination, heavy ash, crystallization, refrigeration, and dry ammonium sections according to the process.

[0003] When the tail gas of the combined soda industry carbonization tower is discharged into the subsequent process, due to reasons such as operation, the tail gas often entangles carbonized lye. The lye is carried to the subsequent process with the carbonization tail gas, which brings great influence to the subsequent production process and poses potential safety hazards. Therefore, a lye anti-backflow system for the carbonization process is proposed to solve the above deficiencies. Content of the Utility Model

[0004] The purpose of the utility model is to provide a lye anti-backflow system for a carbonization process, which is used to solve the problem that the tail gas of the carbonization tower in the existing carbonization process of the combined soda industry entangles carbonized lye, resulting in influence on the subsequent production process and potential safety hazards.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A lye anti-backflow system for a carbonization process, including a gas-liquid separator, a mother liquor barrel, a primary lye separation device, a tail gas total conveying pipe respectively communicated between the gas-liquid separator and the primary lye separation device and the air inlet end of the primary lye separation device, a connecting pipe communicated between two lye conveying pipes and the mother liquor barrel, a carbonization tail gas conveying pipe communicated with the air outlet end of the gas-liquid separator, lye conveying pipes respectively communicated with the water outlet ends of the gas-liquid separator and the primary lye separation device, and valves respectively arranged on the tail gas total conveying pipe, the carbonization tail gas conveying pipe, and the connecting pipe.

[0006] Further, the primary lye separation device includes a separation box, a liquid outlet pipe communicated with the lower end of the separation box, an air outlet pipe communicated with one side of the separation box, an air inlet pipe penetrating and connected to the other side of the separation box, an adsorption separation component and a lye separation component arranged in the separation box from top to bottom in sequence, and an extrusion component arranged on the upper side of the separation box. The air inlet pipe is communicated with the air outlet end of one tail gas total conveying pipe, the air outlet pipe is communicated with the air inlet end of the other tail gas total conveying pipe, the liquid outlet pipe is communicated with the water inlet end of the lye conveying pipe, the lower end of the separation box is in the shape of a conical hopper, the air outlet pipe is located above the adsorption separation component, and the air inlet pipe is located below the lye separation component.

[0007] Further, the adsorption and separation component includes an open-hole support plate arranged in the separation box and a water-absorbing sponge arranged on the open-hole support plate, and the water-absorbing sponge is located below the air outlet pipe.

[0008] Further, the lye separation component includes a plurality of inclined plates arranged in a staggered manner in the separation box, and the plurality of inclined plates are arranged at intervals from top to bottom in sequence, and the inclined plate located at the bottommost is located above the air inlet pipe.

[0009] Further, the extrusion component includes an electric push rod arranged on the upper side of the separation box and an extrusion plate connected to the output end of the electric push rod and located in the separation box, and the extrusion plate acts on the water-absorbing sponge.

[0010] Further, a plurality of through holes arranged in an array are provided at the upper end of the extrusion plate.

[0011] Further, a timing controller is arranged on one side of the separation box, and the timing controller is electrically connected to the electric push rod.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] The present utility model has the following beneficial effects:

[0014] By connecting the tail gas main delivery pipe to the tail gas pipeline of the carbonization tower, the carbonization tail gas enters the primary lye separation device and the gas-liquid separator in sequence through the tail gas main delivery pipe. Through the primary lye separation device and the gas-liquid separator, the tail gas from the carbonization tower is subjected to secondary gas-liquid separation. After the lye entrained in the carbonization tail gas is separated, the carbonization tail gas is sent to the subsequent process for treatment through the carbonization tail gas delivery pipe, and the separated lye is sent to the mother liquid barrel through the lye delivery pipe and the connecting pipe, so as to achieve a stable production process for the subsequent treatment of the carbonization tail gas and eliminate the safety hazards caused by the lye entrained in the carbonization tail gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0016] Figure 2 is a schematic sectional view of the primary lye separation device of the present utility model;

[0017] Figure 3 is a schematic diagram of the structure of the extrusion plate of the present utility model.

[0018] In the figure: 1. Total tail gas delivery pipe; 2. Gas-liquid separator; 3. Carbonization tail gas delivery pipe; 4. Alkali solution delivery pipe; 5. Mother liquor barrel; 6. Valve; 7. Primary alkali solution separation equipment; 8. Separation box; 9. Perforated support plate; 10. Water absorption sponge; 11. Inclined plate; 12. Intake pipe; 13. Liquid outlet pipe; 14. Exhaust pipe; 15. Electric push rod; 16. Extrusion plate; 17. Through hole; 18. Timing controller; 19. Connecting pipe. Specific implementation mode

[0019] Please refer to Figures 1-3 , a carbonization process alkali solution anti-backflow system, including a gas-liquid separator 2, a mother liquor barrel 5, a primary alkali solution separation equipment 7, a total tail gas delivery pipe 1 respectively communicating between the gas-liquid separator 2 and the primary alkali solution separation equipment 7 and the intake end of the primary alkali solution separation equipment 7, a carbonization tail gas delivery pipe 3 communicating with the outlet end of the gas-liquid separator 2, an alkali solution delivery pipe 4 respectively communicating with the outlet ends of the gas-liquid separator 2 and the primary alkali solution separation equipment 7, a connecting pipe 19 communicating between the two alkali solution delivery pipes 4 and the mother liquor barrel 5, and valves 6 respectively arranged on the total tail gas delivery pipe 1, the carbonization tail gas delivery pipe 3, and the connecting pipe 19; by connecting the total tail gas delivery pipe 1 to the tail gas pipeline of the carbonization tower, the carbonization tail gas enters the primary alkali solution separation equipment 7 and the gas-liquid separator 2 in sequence through the total tail gas delivery pipe 1. Through the primary alkali solution separation equipment 7 and the gas-liquid separator 2, the tail gas from the carbonization tower is subjected to secondary gas-liquid separation. After separating the alkali solution entrained in the carbonization tail gas, the carbonization tail gas is sent to the subsequent process for treatment through the carbonization tail gas delivery pipe 3, and the separated alkali solution is sent to the mother liquor barrel 5 through the alkali solution delivery pipe 4 and the connecting pipe 19, thereby achieving a stable production process for the subsequent treatment of the carbonization tail gas and eliminating the safety hazards caused by the alkali solution entrained in the carbonization tail gas.

[0020] The primary lye separation device 7 includes a separation tank 8, a liquid outlet pipe 13 connected to the lower end of the separation tank 8, a gas outlet pipe 14 connected to one side of the separation tank 8, an air inlet pipe 12 penetrating and connected to the other side of the separation tank 8, an adsorption separation component and a lye separation component arranged in the separation tank 8 from top to bottom in sequence, and an extrusion component arranged on the upper side of the separation tank 8. The air inlet pipe 12 is connected to the air outlet end of a total tail gas conveying pipe 1, the gas outlet pipe 14 is connected to the air inlet end of another total tail gas conveying pipe 1, the liquid outlet pipe 13 is connected to the water inlet end of a lye conveying pipe 4. The lower end of the separation tank 8 is in the shape of a conical hopper. The gas outlet pipe 14 is located above the adsorption separation component, and the air inlet pipe 12 is located below the lye separation component. The adsorption separation component includes an open-hole support plate 9 arranged in the separation tank 8 and a water-absorbing sponge 10 arranged on the open-hole support plate 9. The water-absorbing sponge 10 is located below the gas outlet pipe 14. The lye separation component includes a plurality of inclined plates 11 arranged in a staggered manner in the separation tank 8. The plurality of inclined plates 11 are arranged at intervals from top to bottom in sequence. The lowermost inclined plate 11 is located above the air inlet pipe 12. After the carbonized tail gas enters the separation tank 8, the carbonized tail gas gradually rises through the plurality of inclined plates 11. Part of the lye in the tail gas is blocked by the inclined plates 11 and enters the conical part at the lower end of the separation tank 8 by its own gravity. The rising carbonized tail gas enters the water-absorbing sponge 10, and the lye in the tail gas is further adsorbed and separated. The separated carbonized tail gas enters the next total tail gas conveying pipe 1, thereby facilitating the preliminary separation treatment of the carbonized tail gas before entering the gas-liquid separator 2 and improving the separation efficiency of the carbonized tail gas and the lye.

[0021] The extrusion component includes an electric push rod 15 arranged on the upper side of the separation tank 8 and an extrusion plate 16 connected to the output end of the electric push rod 15 and located in the separation tank 8. The extrusion plate 16 acts on the water-absorbing sponge 10. A timing controller 18 is arranged on one side of the separation tank 8. The timing controller 18 is electrically connected to the electric push rod 15. The timing controller 18 controls the electric push rod 15 to be turned on at regular intervals. The electric push rod 15 drives the extrusion plate 16 to reciprocate up and down. The extrusion plate 16 extrudes the water-absorbing sponge 10, squeezes and separates the lye water adsorbed in the water-absorbing sponge 10, and conveys it into the mother liquor barrel 5 through the lye conveying pipe 4.

[0022] A plurality of through holes 17 are arranged in an array at the upper end of the extrusion plate 16. During the process of the extrusion plate 16 extruding the water-absorbing sponge 10, through the plurality of through holes 17, it is convenient for the carbonized tail gas to pass through the extrusion plate 16 and rise into the gas-liquid separator 2.

[0023] Working principle: By connecting the total tail gas delivery pipe 1 to the tail gas pipeline of the carbonization tower, the carbonization tail gas enters the primary lye separation device 7 and the gas-liquid separator 2 in sequence through the total tail gas delivery pipe 1. After the carbonization tail gas enters the separation box 8, it gradually rises through a plurality of inclined plates 11. Part of the lye in the tail gas is blocked by the inclined plates 11 and enters the conical part at the lower end of the separation box 8 due to its own gravity. The rising carbonization tail gas enters the water-absorbing sponge 10, where the lye in the tail gas is further adsorbed and separated. The separated carbonization tail gas enters the next total tail gas delivery pipe 1 and enters the gas-liquid separator 2 for further gas-liquid separation. Through the primary lye separation device 7 and the gas-liquid separator 2, the tail gas from the carbonization tower is subjected to secondary gas-liquid separation. After the lye entrained in the carbonization tail gas is separated, the carbonization tail gas is sent to the subsequent process for treatment through the carbonization tail gas delivery pipe 3, and the separated lye is sent to the mother liquor barrel 5 through the lye delivery pipe 4 and the connecting pipe 19, thus achieving a stable production process for the subsequent treatment of the carbonization tail gas and eliminating the safety hazards caused by the lye entrained in the carbonization tail gas;

[0024] The timing controller 18 controls the electric push rod 15 to start at regular intervals. The electric push rod 15 drives the extrusion plate 16 to reciprocate up and down. The extrusion plate 16 extrudes the water-absorbing sponge 10, squeezing and separating the lye adsorbed in the water-absorbing sponge 10, and conveying it into the mother liquor barrel 5 through the lye delivery pipe 4.

[0025] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A carbonization process alkali solution backflow prevention system, characterized in that: The invention comprises a gas-liquid separator (2), a mother liquid barrel (5), a primary alkali liquid separation device (7), a tail gas main conveying pipe (1) respectively connected to the gas-liquid separator (2) and the primary alkali liquid separation device (7) and the gas inlet end of the primary alkali liquid separation device (7), a carbonized tail gas conveying pipe (3) connected to the gas outlet end of the gas-liquid separator (2), an alkali liquid conveying pipe (4) respectively connected to the gas-liquid separator (2) and the water outlet end of the primary alkali liquid separation device (7), a connecting pipe (19) connected between the two alkali liquid conveying pipes (4) and the mother liquid barrel (5), and valves (6) respectively arranged on the tail gas main conveying pipe (1), the carbonized tail gas conveying pipe (3), and the connecting pipe (19).

2. The carbonization process alkali solution backflow prevention system according to claim 1, characterized in that: The primary alkali liquid separation equipment (7) comprises a separation box (8), a liquid outlet pipe (13) connected to the lower end of the separation box (8), an air outlet pipe (14) connected to one side of the separation box (8), an air inlet pipe (12) penetrating and connected to the other side of the separation box (8), an adsorption separation component and an alkali liquid separation component arranged in sequence from top to bottom in the separation box (8), and an extrusion component arranged on the upper side of the separation box (8), the air inlet pipe (12) being connected to the air outlet end of one exhaust gas main delivery pipe (1), the air outlet pipe (14) being connected to the air inlet end of another exhaust gas main delivery pipe (1), the liquid outlet pipe (13) being connected to the water inlet end of the alkali liquid delivery pipe (4), the lower end of the separation box (8) being in the shape of a conical bucket, the air outlet pipe (14) being located above the adsorption separation component, and the air inlet pipe (12) being located below the alkali liquid separation component.

3. A carbonization process alkali solution backflow prevention system as claimed in claim 2, characterized in that: The adsorption separation component comprises a perforated support plate (9) arranged in the separation box (8), and a water-absorbing sponge (10) arranged on the perforated support plate (9), wherein the water-absorbing sponge (10) is located below the air outlet pipe (14).

4. A carbonization process alkali solution backflow prevention system as claimed in claim 2, characterized in that: The alkali liquid separation component comprises a plurality of inclined plates (11) arranged in a staggered manner in a separation box (8); the plurality of inclined plates (11) are arranged in sequence from top to bottom at intervals, and the lowest inclined plate (11) is located above the air intake pipe (12).

5. The carbonization process alkali solution backflow prevention system according to claim 3, characterized in that: The squeezing assembly comprises an electric push rod (15) disposed on the upper side of the separation box (8), and a squeezing plate (16) connected to the output end of the electric push rod (15) and located inside the separation box (8), wherein the squeezing plate (16) acts on the water-absorbing sponge (10).

6. A carbonization process alkali solution backflow prevention system as claimed in claim 5, characterized in that: The upper end of the extrusion plate (16) is provided with a plurality of through holes (17) arranged in an array.

7. The carbonization process alkali solution backflow prevention system according to claim 5, characterized in that: A timing controller (18) is provided on one side of the separation box (8), and the timing controller (18) is electrically connected to the electric push rod (15).

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