Kiln gas washer

Abstract

The utility model discloses a kiln gas washer which comprises a washing tower main body, a kiln gas inlet pipe, a slurry pump, a circulating pool and a cyclone separator, the washing tower main body comprises a tower body, and a spraying and washing separator, a filler filter and a filter screen which are arranged in the tower body from bottom to top; the bottom of the tower body is a slurry outlet, and the top of the tower body is a kiln gas outlet; the kiln gas inlet pipe is arranged below the spraying and washing separator, and the gas outlet end of the kiln gas inlet is immersed under the water surface; the slurry outlet is connected with the circulating pool through a slurry outlet pipeline; the slurry pump is mounted on the slurry outlet pipeline; a liquid level switch is arranged on the inner wall above the gas outlet end of the kiln gas inlet in the tower body; the inlet end of the cyclone separator is connected with the kiln gas outlet, and the outlet end of the cyclone separator is connected with the exhaust fan; and the sewage discharge end of the cyclone separator flows back into the tower body. The liquid level in the tower body can be automatically monitored and adjusted, the quality of kiln gas products can be improved, and the service life of equipment can be prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of kiln gas washing equipment, in particular to a kiln gas washer. Background Art

[0002] The application of kiln gas in sugar production is mainly the gas generated by the lime kiln, which is fully used in the sugar purification process after washing. In the sugar industry, the application of kiln gas is an important link. The lime kiln is operated in a closed manner. The air is sent from the bottom of the kiln to the washing tower through a blower. The kiln gas after washing is extracted from the top of the tower through a gas pump and fully used in the sugar purification process. This application method helps to improve the efficiency and quality of the sugar production process, and also meets environmental protection requirements and helps to reduce pollutant emissions.

[0003] In order to make the kiln gas meet the production requirements, it is necessary to use a kiln gas treatment device to purify the kiln gas. The existing scrubber is relatively low in height, the water storage at the bottom of the washing tower is insufficient, and the volume is insufficient. After the washing water is pumped away, it is easy to cause the water level of the washing tower to be difficult to control. Once the water level does not cover the kiln gas inlet, the kiln gas washing effect is poor, there is a lot of dust, and the pump body at the outlet is increased. Wear, the quality of the kiln gas is also difficult to meet production requirements. Directly replacing a large washing tower is very costly. Therefore, this application is mainly based on the original equipment to transform and upgrade the existing small washing tower to solve the technical problems of the existing washing tower being difficult to control the water level and poor washing effect. Summary of the invention

[0004] The utility model provides a kiln gas scrubber which can automatically monitor and adjust the change of the liquid level height inside the tower body, has the advantages of high kiln gas dust purification rate and low water content, can improve the quality of kiln gas products and increase the service life of the equipment.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A kiln gas scrubber comprises a scrubbing tower body, a kiln gas inlet pipe, a slurry pump, a circulation pool and a cyclone separator; the scrubbing tower body comprises a tower body, and a spray scrubbing separator, a packing filter and a filter screen arranged in the tower body from bottom to top; the bottom of the tower body is set as a slurry outlet, and the top of the tower body is set as a kiln gas outlet; the kiln gas inlet pipe is arranged below the spray scrubbing separator, and the outlet end of the kiln gas inlet pipe is immersed under the water surface; the slurry outlet is connected to the circulation pool through a slurry outlet pipe, and the slurry pump is installed on the slurry outlet pipe; a liquid level switch is provided on the inner wall above the outlet end of the kiln gas inlet pipe in the tower body; the inlet end of the cyclone separator is connected to the kiln gas outlet, and the outlet end of the cyclone separator is connected to an exhaust fan; the sewage discharge end of the cyclone separator flows back into the tower body.

[0007] Furthermore, the spray washing separator includes a spray head, a washing box, a spray pipe and a spray supply water pump; the top and bottom of the washing box are provided with a plurality of water permeable holes corresponding to each other, and each corresponding group of water permeable holes at the top and bottom of the washing box are connected by a spiral tube; the peripheral side of the washing box is fixedly connected to the inner wall of the tower body; the spray head is arranged above the washing box, one end of the spray head is connected to the circulation pool through the spray pipe, and the spray supply water pump is installed on the spray pipe.

[0008] Furthermore, the packing filter is arranged above the sprinkler head; one end of the packing filter is set as a packing inlet, and the other end of the packing filter is set as a packing outlet, and the top and bottom of the packing filter are both provided with densely distributed air holes.

[0009] Furthermore, the top of the circulation pool is connected to the tower body through a liquid adding pipeline, and a liquid adding pump is provided on the liquid adding pipeline.

[0010] Furthermore, a liquid level switch is provided in the circulation pool, and the liquid level switch is located above the water inlet ends of the liquid adding pipeline and the spray pipe.

[0011] Furthermore, a coarse filter is provided at the water inlet end of the liquid adding pipeline and the spray pipe.

[0012] Furthermore, the circulation pool is provided with a sewage outlet and a water inlet, and both the sewage outlet and the water inlet are provided with solenoid valves.

[0013] The beneficial effects of the utility model are:

[0014] 1) The utility model forms the first washing process by immersing the kiln gas inlet pipe with water stored at the bottom of the tower body, and then performs multiple filtering and washing in sequence through a spray washing separator, a packing filter, and a filter screen, and finally removes most of the water mist in the kiln gas through a cyclone separator, thereby improving the quality of the kiln gas product and the service life of the equipment; and the water stored at the bottom of the tower body can automatically monitor and adjust the changes in the liquid level inside the tower body to prevent the water level from being lower than the bottom of the kiln gas inlet pipe.

[0015] 2) The spray water sprayed from the spray head flows down along the spiral tube and fully contacts with the kiln gas in the spiral tube. Compared with the traditional direct spraying method, the design of the spiral tube can prolong the contact time between the kiln gas and the spray water and improve the washing effect.

[0016] 3) In order to prevent the water level from dropping too quickly when the slurry pump is turned on, the utility model is also provided with a liquid adding pipeline, through which the slurry pump can be kept running, so that the washing water in the tower body can be continuously circulated, avoiding excessive accumulation of sediment at the bottom of the tower body and reducing the washing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings, wherein:

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the spray washing separator in the utility model;

[0020] Figure ID:

[0021] 1-washing tower body, 2-kiln gas inlet pipe, 3-slurry pump, 4-circulation pool, 5-cyclone separator, 6-exhaust fan, 11-tower body, 12-spray washing separator, 13-packing filter, 14-filter, 15-liquid level switch, 111-slurry outlet, 112-kiln gas outlet, 113-slurry outlet pipe, 121-spray head, 122-washing box, 123-spray pipe, 124-spray supply water pump, 125-water permeable hole, 126-spiral pipe, 16-liquid adding pipe, 17-liquid adding pump, 41-liquid level switch, 42-drainage outlet, 43-water inlet, 44-solenoid valve, 45-coarse filter. DETAILED DESCRIPTION

[0022] 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 of 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.

[0023] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a central component at the same time. When a component is referred to as being "set in the middle", it does not only mean being set in the middle, as long as it is not set at both ends within the range defined by the middle. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0025] Reference Figure 1 to Figure 2As shown, a kiln gas scrubber comprises a scrubbing tower body 1, a kiln gas inlet pipe 2, a slurry pump 3, a circulation pool 4 and a cyclone separator 5; the scrubbing tower body 1 comprises a tower body 11, and a spray scrubbing separator 12, a packing filter 13 and a filter screen 14 arranged in the tower body 11 from bottom to top; the bottom of the tower body 11 is set as a slurry outlet 111, and the top of the tower body 11 is set as a kiln gas outlet 112; the kiln gas inlet pipe 2 is arranged below the spray scrubbing separator 12, and the gas outlet end of the kiln gas inlet pipe 2 is immersed under the water surface; the slurry outlet The outlet 111 is connected to the circulation pool 4 through the slurry outlet pipe 113, and the slurry pump 3 is installed on the slurry outlet pipe 113; a liquid level switch 15 is provided on the inner wall above the outlet end 2 of the kiln gas inlet pipe in the tower body 11, and the liquid level switch 15 is used to monitor the water level at the bottom of the tower body 1 to ensure that the water surface can submerge the outlet end of the kiln gas inlet pipe 2; the inlet end of the cyclone separator 5 is connected to the kiln gas outlet 112, and the outlet end of the cyclone separator 5 is connected to the exhaust fan 6; the sewage discharge end of the cyclone separator 5 is refluxed into the tower body 11. Before washing kiln gas, it is necessary to open the spray washing separator 12 first, and wait for the water level to rise to submerge the outlet end of the kiln gas inlet pipe 2. At this time, open the kiln gas inlet pipe 2, and the kiln gas is sprayed out from the outlet end, fully mixed with the washing water, and the large particles of dust in the kiln gas are filtered out. The dust sinks to the bottom of the tower body 11 and is taken out by the slurry pump. The kiln gas continues to enter the spray washing separator 12 upward, and is washed twice by the sprayed washing water. Thereafter, the kiln gas passes through the packing filter 13 and the filter screen 14 in turn to further filter out the dust particles in the kiln gas, and then the moisture in the kiln gas is filtered through the cyclone separator 5, so that the water vapor content in the kiln gas is greatly reduced. The filtered dust particles sink to the bottom of the tower body 11 and are pumped out together with the washing water by the slurry pump 3. If the washing water from the spray washing separator 12 is not replenished in time, the water level at the bottom of the tower body may drop. Therefore, a liquid level switch 15 is provided on the inner wall of the tower body. The water level at the bottom of the tower body is monitored by the liquid level switch 15. If the water level is low, the operation of the slurry pump 3 is turned off to store water. If the water level is high, the slurry pump 3 is turned on to pump water to ensure that the water surface can submerge the outlet end of the kiln gas inlet pipe 2. The utility model is based on the existing washing tower, and a circulation pool 4 and a cyclone separator 5 are added. A liquid level switch is added in the washing tower, which can automatically monitor and automatically adjust the liquid level in the tower. It has the advantages of high kiln gas dust purification rate and low water content, and can improve the quality of kiln gas products and increase the service life of the equipment.

[0026] In the present embodiment, the structure of the spray-washing separator is improved at the same time, and the spray-washing separator 12 comprises a spray head 121, a washing box 122, a spray pipe 123 and a spray supply water pump 124; the top and bottom of the washing box 122 are provided with a plurality of corresponding water holes 125, and each corresponding group of water holes 125 at the top and bottom of the washing box 122 are connected by a spiral tube 126; the peripheral side of the washing box 122 is fixedly connected to the inner wall of the tower body 1; the spray head 121 is arranged above the washing box 122, one end of the spray head 121 is connected to the circulation pool 4 through the spray pipe 123, and the spray supply water pump 124 is installed on the spray pipe 123. The spray water sprayed from the spray head 121 flows down along the threaded tube 123 and fully contacts the kiln gas in the spiral tube 126. Compared with the traditional direct spray washing method, the design of the spiral tube 126 can prolong the contact time between the kiln gas and the spray water and improve the washing effect. When making the washing box 122, two steel plates of a size matching the inner diameter of the tower body are used, and water holes corresponding to the positions are drilled on the two steel plates. The ends of each spiral tube are welded and fixed to the water holes of the two steel plates one by one, and finally the two steel plates are welded and sealed to the inner wall of the tower body.

[0027] The packing filter 13 is arranged above the spray head 121; one end of the packing filter 13 is set as a packing inlet, and the other end of the packing filter 13 is set as a packing outlet. The top and bottom of the packing filter 13 are both provided with dense air holes.

[0028] In order to prevent the water level from dropping too fast when the slurry pump 3 is turned on, the utility model can be provided with another liquid adding pipeline 16. The top of the circulation pool 4 is connected to the tower body 11 through the liquid adding pipeline 16, and the liquid adding pipeline 16 is provided with a liquid adding pump 17. Such a design can make the slurry pump 3 run all the time, so that the washing water in the tower body 11 can be continuously circulated, and the sediment at the bottom of the tower body can be prevented from accumulating too much and reducing the washing effect.

[0029] A liquid level switch 41 is provided in the circulation pool 4, and the liquid level switch 41 is located above the water inlet end of the liquid adding pipe 16 and the spray pipe 123. The circulation pool 4 is provided with a sewage outlet 42 and a water inlet 43, and both the sewage outlet 42 and the water inlet 43 are provided with a solenoid valve 44. The solenoid valve 44 on the water inlet pipe 43 is linked with the liquid level switch 41. When the liquid level switch 41 sends a low liquid level signal, the solenoid valve 44 is opened for automatic water replenishment. The sewage outlet 42 is used to clean the sediment in the circulation pool 4.

[0030] In order to improve the cleanliness of the washing water entering the tower body 11 for the second time, a coarse filter 45 is provided at the water inlet end of the liquid adding pipe 16 and the spray pipe 123 .

[0031] The above embodiments are only used to illustrate the technical solution of the utility model but not to limit it. Any modification or equivalent substitution that does not deviate from the spirit and scope of the utility model shall be included in the scope of the technical solution of the utility model.

Claims

1. A kiln gas scrubber, characterized in that: It includes a washing tower body, a kiln gas inlet pipe, a slurry pump, a circulation pool and a cyclone separator; the washing tower body includes a tower body, and a spray washing separator, a packing filter and a filter screen arranged in the tower body from bottom to top; the bottom of the tower body is set as a slurry outlet, and the top of the tower body is set as a kiln gas outlet; the kiln gas inlet pipe is arranged below the spray washing separator, and the outlet end of the kiln gas inlet pipe is immersed under the water surface; the slurry outlet is connected to the circulation pool through a slurry outlet pipe, and the slurry pump is installed on the slurry outlet pipe; a liquid level switch is provided on the inner wall above the outlet end of the kiln gas inlet pipe in the tower body; the inlet end of the cyclone separator is connected to the kiln gas outlet, and the outlet end of the cyclone separator is connected to an exhaust fan; the sewage discharge end of the cyclone separator flows back into the tower body.

2. A kiln gas scrubber according to claim 1, characterized in that: The spray washing separator includes a spray head, a washing box, a spray pipe and a spray supply water pump; the top and bottom of the washing box are each provided with a plurality of water permeable holes in one-to-one correspondence, and each corresponding group of water permeable holes at the top and bottom of the washing box are connected by a spiral tube; the peripheral side of the washing box is fixedly connected to the inner wall of the tower body; the spray head is arranged above the washing box, one end of the spray head is connected to the circulation pool through the spray pipe, and the spray supply water pump is installed on the spray pipe.

3. A kiln gas scrubber according to claim 2, characterized in that: The packing filter is arranged above the spray head; one end of the packing filter is set as a packing inlet, and the other end of the packing filter is set as a packing outlet. The top and bottom of the packing filter are both provided with densely distributed air holes.

4. A kiln gas scrubber according to claim 2, characterized in that: The top of the circulation pool is connected to the tower body through a liquid adding pipeline, and a liquid adding pump is arranged on the liquid adding pipeline.

5. A kiln gas scrubber according to claim 4, characterized in that: A liquid level switch is arranged in the circulation pool, and the liquid level switch is located above the water inlet ends of the liquid adding pipeline and the spray pipe.

6. A kiln gas scrubber according to claim 4, characterized in that: The water inlet ends of the liquid adding pipeline and the spray pipe are both provided with a coarse filter.

7. A kiln gas scrubber according to claim 5, characterized in that: The circulation pool is provided with a sewage outlet and a water inlet, and both the sewage outlet and the water inlet are provided with solenoid valves.

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