Kiln gas washing tower of lime kiln

Abstract

The utility model relates to the technical field of carbon dioxide dissolution, and discloses a lime kiln gas washing tower, which comprises a base, a washing box, a middle section gas compressor, a spray cooling tower, a separator and an aeration device are arranged on the base, a fixed plate is arranged in the middle of the inside of the washing box, and a condenser pipe is arranged above the fixed plate. According to the utility model, a middle-section gas washing and cooling device of a compression workshop is taken as a research object, compressed middle-section gas enters a modified middle-section gas washing and cooling tower, and low carbon dioxide dissolution loss of the middle-section gas is realized by investigating parameters such as pressure and temperature of the middle-section gas at an outlet of the compressor and temperature and pressure of seawater; then the cooled middle-section gas is fed into a seawater secondary aeration device, part of carbon dioxide dissolved in the seawater is recovered through pressure reduction, the carbon dioxide emission loss of the middle-section gas is finally reduced, it is predicted that the carbon dioxide emission loss can be reduced by about 976000 m < 3 > / year, carbon dioxide consumption can be effectively reduced, waste gas emission can be reduced, and the ecological environment can be protected.

Description

Technical Field

[0001] The utility model relates to the technical field of carbon dioxide dissolution, in particular to a lime kiln gas washing tower. Background Art

[0002] The middle gas (mainly carbon dioxide) used for carbonization of soda ash has a high temperature after being compressed by the compressor. Haitian Company currently uses seawater spraying to wash and cool the middle gas. Although the temperature of the middle gas can be reduced to the level required for carbonization reaction, part of the carbon dioxide gas dissolves into the seawater during the washing and cooling process, resulting in serious gas contamination in the seawater discharge pipeline, causing impact on the pipeline and causing carbon dioxide loss. Therefore, recycling part of the carbon dioxide dissolved in seawater can reduce the impact on the pipeline while also reducing carbon dioxide emission losses, which is in line with the current development trend of energy conservation and emission reduction in the country and the soda ash industry, and has significant social benefits.

[0003] The current status of Haitian Company's seawater washing and recycling is as follows: Due to the serious gas carryover in the external discharge pipeline, which has a great impact on the pipeline, Haitian Company directly makes an exhaust port on the seawater external discharge pipeline to discharge carbon dioxide gas directly into the air; detection finds that the concentration of the discharged carbon dioxide gas is very high, and direct discharge will cause carbon dioxide loss and cause environmental pollution. For this reason, a lime kiln gas washing tower is proposed. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a lime kiln gas washing tower.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a lime kiln gas washing tower, including a base, on which a washing box, a middle-section gas compressor, a spray cooling tower, a separator, and an air explosion device are installed, a fixed plate is provided in the middle of the interior of the washing box, a condenser is provided above the fixed plate, a delivery pipe 1 is installed on one side of the condenser, and the delivery pipe 1 is connected to the middle-section gas compressor, a water inlet pipe is provided on the washing box, and the water inlet pipe passes through and is fixedly connected to the fixed plate, and an air inlet pipe is installed on one side below the washing box.

[0006] As a further description of the above technical solution:

[0007] A delivery pipe 2 is installed on one side of the middle section air compressor, and the delivery pipe 2 is connected to a separator on the side away from the middle section air compressor. A delivery pipe 4 is installed on the side of the separator away from the delivery pipe 2, and the delivery pipe 4 is connected to a spray cooling tower on the side away from the separator.

[0008] As a further description of the above technical solution:

[0009] A delivery pipe 3 is installed on the side of the spray cooling tower away from the delivery pipe 4, and the delivery pipe 3 is installed on the air-explosion device on the side away from the spray cooling tower.

[0010] As a further description of the above technical solution:

[0011] A delivery pipe 51 and a water inlet are installed above the air bursting device, a gas-water separator is installed on the side of the delivery pipe 51 away from the air bursting device, and an air inlet is installed above the spray cooling tower.

[0012] The utility model has the following beneficial effects:

[0013] 1. In the utility model, the middle-section gas washing and cooling device of the compression workshop is taken as the research object. The compressed middle-section gas enters the modified middle-section gas washing and cooling tower. By examining the pressure, temperature and seawater temperature, pressure and other parameters of the middle-section gas at the compressor outlet, the carbon dioxide dissolution loss of the middle-section gas is low. The cooled middle-section gas is then sent to the seawater secondary air-explosion device. Part of the carbon dioxide dissolved in the seawater is recovered by decompression, and finally the carbon dioxide emission loss of the middle-section gas is reduced. It is expected to be reduced by about 976,000m3 / year, which can effectively reduce carbon dioxide consumption, reduce exhaust gas emissions, and protect the ecological environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic diagram of the structure of a lime kiln gas washing tower proposed in the utility model Figure 1 ;

[0015] Figure 2 A schematic diagram of the structure of a lime kiln gas washing tower proposed in the utility model Figure 2 ;

[0016] Figure 3 The utility model discloses an internal schematic diagram of a lime kiln gas washing tower.

[0017] Legend:

[0018] 1. Washing box; 2. Air inlet pipe; 3. Mid-section air compressor; 4. Spray cooling tower; 5. Separator; 6. Air bursting device; 7. Air-water separator; 8. Base; 9. Water inlet pipe; 10. Fixed plate; 11. Condenser; 12. Delivery pipe 1; 13. Water inlet; 14. Delivery pipe 2; 15. Delivery pipe 3; 16. Delivery pipe 4; 17. Air inlet; 18. Delivery pipe 5. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Reference Figure 1-Figure 3 The utility model provides an embodiment: a lime kiln gas washing tower, including a base 8, a washing box 1, a middle-section gas compressor 3, a spray cooling tower 4, a separator 5, and an air explosion device 6 are installed on the base 8, a fixed plate 10 is provided in the middle of the washing box 1, a condenser 11 is provided above the fixed plate 10, a delivery pipe 12 is installed on one side of the condenser 11, and the delivery pipe 12 is connected to the middle-section gas compressor 3, a water inlet pipe 9 is provided on the washing box 1, and the water inlet pipe 9 passes through and is fixedly connected to the fixed plate 10, and an air inlet pipe 2 is installed on one side below the washing box 1.

[0021] A delivery pipe 2 14 is installed on one side of the middle-section gas compressor 3, and the delivery pipe 2 14 is connected to the separator 5 on the side away from the middle-section gas compressor 3. A delivery pipe 4 16 is installed on the side of the separator 5 away from the delivery pipe 2 14. The delivery pipe 4 16 is connected to the spray cooling tower 4 on the side away from the separator 5. A delivery pipe 3 15 is installed on the spray cooling tower 4 on the side away from the delivery pipe 4 16. The delivery pipe 3 15 is installed on the side away from the spray cooling tower 4 to the air burst device 6. A delivery pipe 5 18 and a water inlet 13 are installed above the air burst device 6. A gas-water separator 7 is installed on the side of the delivery pipe 5 18 away from the air burst device 6, and an air inlet 17 is installed above the spray cooling tower 4.

[0022] Working principle: During operation, the kiln gas generated by the lime kiln passes through the washing box 1 and the condenser 11 for washing and cooling, and then enters the middle-section gas compressor 3 through the delivery pipe 1 12 to compress the gas to 0.28-0.32MPa. The gas is then merged into the delivery pipe 2 14, and enters the bottom of the spray cooling tower 4 through the delivery pipe 4 16 via the separator 5. The cooling water enters the spray cooling tower 4 through the air inlet 17. The gas is countercurrently contacted with the cooling water directly sprayed from the upper part of the tower from bottom to top to cool down. Seawater is added into the aeration device 6 through the water inlet 13, and the cooled middle-section gas is sent to the aeration device 6 for secondary aeration treatment. Part of the carbon dioxide dissolved in the seawater is recovered by decompression, and separated through the gas-water separator 7 through the delivery pipe 5 18, and then supplied to carbonization alkali production through the middle-section gas main pipe.

[0023] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A lime kiln gas scrubber, comprising a base (8), characterized in that: The base (8) is provided with a washing box (1), a middle section air compressor (3), a spray cooling tower (4), a separator (5), and an air bursting device (6); a fixed plate (10) is provided in the middle of the washing box (1); a condenser (11) is provided above the fixed plate (10); a delivery pipe (12) is provided on one side of the condenser (11); the delivery pipe (12) is connected to the middle section air compressor (3); a water inlet pipe (9) is provided on the washing box (1); the water inlet pipe (9) passes through and is fixedly connected to the fixed plate (10); an air inlet pipe (2) is provided on one side below the washing box (1).

2. A lime kiln gas scrubber according to claim 1, characterized in that: A second delivery pipe (14) is installed on one side of the middle section air compressor (3), and the second delivery pipe (14) is connected to the separator (5) at a side away from the middle section air compressor (3). A fourth delivery pipe (16) is installed on the side of the separator (5) away from the second delivery pipe (14), and the fourth delivery pipe (16) is connected to the spray cooling tower (4) at a side away from the separator (5).

3. A lime kiln gas scrubber according to claim 1, characterized in that: A delivery pipe three (15) is installed on the side of the spray cooling tower (4) away from the delivery pipe four (16), and the delivery pipe three (15) is installed on the air-explosion device (6) on the side away from the spray cooling tower (4).

4. A lime kiln gas scrubber according to claim 1, characterized in that: A delivery pipe five (18) and a water inlet (13) are installed above the air bursting device (6); a gas-water separator (7) is installed on the side of the delivery pipe five (18) away from the air bursting device (6); and an air inlet (17) is installed above the spray cooling tower (4).

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