Waste gas treatment device for dryer

Abstract

The waste gas treatment device comprises a bearing cylinder, a main water pipe and a branch water pipe, one end of the main water pipe is closed, and the other end of the main water pipe is open; the peripheral wall of the bearing cylinder is communicated with an air inlet pipe; the open end of the main water pipe penetrates through and is fixedly connected with a bottom plate of the bearing cylinder, the open end of the main water pipe is connected with a water inlet pipe, the main water pipe is fixedly sleeved with a spiral plate, the outer edge of the spiral plate is fixedly connected with the inner wall of the bearing cylinder, branch water pipes are annularly arrayed on the peripheral wall of the upper portion of the main water pipe, one end of each branch water pipe is closed, and the other end of each branch water pipe is open. The open end of the branch water pipe communicates with the main water pipe on the upper side of the spiral plate, the closed end of the branch water pipe is bent downwards and penetrates through the spiral plate, and a plurality of first water outlet holes are evenly distributed in the vertical part of the branch water pipe; a plurality of water outlet holes II are formed in the peripheral wall of the main water pipe on the upper sides of the branch water pipes. The waste gas treatment device solves the problems of short contact time and small contact area of waste gas and spray water when the waste gas is treated by the spray water.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas treatment, and particularly relates to a waste gas treatment device for a dryer. Background Art

[0002] Proppants are often sand grains or other particulate materials and are used in the hydraulic fracturing process to keep the fractures open, thereby increasing the production of oil and gas fields; after the hydraulic fracturing is completed, the proppants carry a large amount of moisture, which not only increases the fluid volume in the wellbore but also may affect the oil and gas recovery efficiency. Therefore, it is necessary to remove the moisture in the proppants, and special drying equipment, such as a dryer, is used to heat and dry the proppants. Other pollutants that may be emitted during the proppant drying process include, but are not limited to, dust, particulate matter, volatile organic compounds (VOCs), sulfides, nitrogen oxides, etc. The emission of these pollutants will affect the air quality and may cause harm to the environment and human health; therefore, it is necessary to treat the waste gas after the proppant is dried.

[0003] Currently, the method of spraying water is generally used to treat waste gas. However, in this method, during the upward movement of the waste gas, the contact time with the downwardly sprayed water is short, and the contact area between the two is small, resulting in poor waste gas treatment effect. Summary of the Invention

[0004] In order to solve the problem that when the waste gas is treated with sprayed water, the contact time between the waste gas and the sprayed water is short and the contact area is small, the utility model provides a waste gas treatment device for a dryer, which can improve the waste gas treatment effect.

[0005] In order to solve the above problems, the technical solution of the utility model is:

[0006] A waste gas treatment device for a dryer includes a bearing cylinder, a main water pipe, and a branch water pipe; a drain pipe is communicated with the bottom plate of the bearing cylinder; one end of the main water pipe is closed and the other end is open, and an air inlet pipe is communicated with the peripheral wall of the bearing cylinder; the open end of the main water pipe penetrates and is fixedly connected to the bottom plate of the bearing cylinder, the open end of the main water pipe is connected with a water inlet pipe, a spiral plate is fixedly sleeved outside the main water pipe, the outer edge of the spiral plate is fixedly connected to the inner wall of the bearing cylinder, the upper peripheral wall of the main water pipe is annularly provided with branch water pipes, one end of the branch water pipe is closed and the other end is open, the open end of the branch water pipe is communicated with the main water pipe above the spiral plate, the closed end is bent downward and penetrates the spiral plate, and a plurality of first water outlet holes are uniformly arranged on the vertical part of the branch water pipe; a plurality of second water outlet holes are arranged on the peripheral wall of the main water pipe above the plurality of branch water pipes.

[0007] Furthermore, a plurality of support legs are arranged on the outer bottom surface of the bearing cylinder, and the water inlet pipe is located below the bearing cylinder.

[0008] Further, the branch water pipe is an L-shaped pipe body composed of a horizontal part and a vertical part, and the closed end of the branch water pipe is connected to the inner bottom surface of the bearing cylinder.

[0009] Further, the spiral plate, the inner wall of the bearing cylinder and the outer wall of the main water pipe together form a spiral channel; the air inlet pipe penetrates through the lower part of the peripheral wall of the bearing cylinder and communicates with the spiral channel.

[0010] Further, there are multiple groups of the second water outlet holes, and the multiple groups of the second water outlet holes are arranged at intervals along the height direction of the main water pipe. Each group of the second water outlet holes consists of multiple second water outlet holes arrayed along the central axis of the main water pipe; the outer end of each of the second water outlet holes penetrates through the outer wall of the main water pipe, and the inner end penetrates through the inner wall of the main water pipe, and the multiple second water outlet holes are in a radially inclined state.

[0011] Further, the spiral direction of the spiral plate is right-handed, and the outer end of each of the second water outlet holes in the same group is inclined clockwise.

[0012] By the above technical solution, the beneficial effects of the present utility model are as follows:

[0013] When the waste gas of the present utility model flows through the spiral channel, the flow path of the waste gas is increased. The spray water flowing out through the first water outlet holes on the branch water pipe sprays the waste gas in the spiral channel. The waste gas contacts the spray water multiple times in the spiral channel. Therefore, the contact area and contact time between the waste gas and the spray water can be increased, and the treatment efficiency of the waste gas can be improved.

[0014] After the waste gas flows out from the upper end of the spiral channel of the present utility model, the flow direction of the waste gas in the bearing cylinder is opposite to the direction of the spray water flowing out through the second water outlet holes, and the two form a counterflush, further increasing the contact area between the waste gas and the spray water and further improving the waste gas treatment effect. Description of the Drawings

[0015] Figure 1 is the sectional front view of the present utility model (the main water pipe, the branch water pipe, the spiral plate, the water inlet pipe, the air inlet pipe and the drain pipe are not sectioned);

[0016] Figure 2 is the structural schematic diagram of the connection of the main water pipe, the branch water pipe and the spiral plate of the present utility model;

[0017] Figure 3 is the sectional top view (enlarged view) of a group of the second water outlet holes on the main water pipe of the present utility model.

[0018] The reference numerals in the drawings are: 1, bearing cylinder; 2, main water pipe; 3, branch water pipe; 4, drain pipe; 5, air inlet pipe; 6, spiral plate; 7, first water outlet hole; 8, second water outlet hole; 9, support leg; 10, water inlet pipe. Detailed Embodiments

[0019] The present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments:

[0020] As Figures 1 to 3 shown, an exhaust gas treatment device for a dryer includes a bearing cylinder 1, a main water pipe 2 and a branch water pipe 3; the bearing cylinder 1 is a cylindrical barrel with an open upper end and a closed lower end, the main water pipe 2 is a circular pipe body, and a drain pipe 4 is communicated with the bottom plate of the bearing cylinder 1; an air inlet pipe 5 is communicated with the peripheral wall of the bearing cylinder 1; one end of the main water pipe 2 is closed and the other end is open, the open end of the main water pipe 2 penetrates and is fixedly connected to the middle of the bottom plate of the bearing cylinder 1, the open end of the main water pipe 2 is connected with a water inlet pipe 10, a spiral plate 6 is fixedly sleeved outside the main water pipe 2, the outer edge of the spiral plate 6 is fixedly connected to the inner wall of the bearing cylinder 1, the upper peripheral wall of the main water pipe 2 is annularly arrayed with branch water pipes 3, one end of the branch water pipe 3 is closed and the other end is open, the branch water pipe 3 is a circular pipe body, the open end of the branch water pipe 3 is communicated with the main water pipe 2 above the spiral plate 6, and the closed end is bent downward to penetrate the spiral plate 6. A plurality of first water outlet holes 7 are evenly distributed on the vertical part of the branch water pipe 3, and the first water outlet holes 7 are circular holes; a plurality of second water outlet holes 8 are arranged on the peripheral wall of the main water pipe 2 above the plurality of branch water pipes 3.

[0021] A plurality of support legs 9 are arranged on the outer bottom surface of the bearing cylinder 1, the water inlet pipe 10 is located below the bearing cylinder 1, and the plurality of support legs 9 are beneficial to connecting the water inlet pipe 10 to the main water pipe 2.

[0022] The branch water pipe 3 is an L-shaped pipe body composed of a horizontal part and a vertical part, and the closed end of the branch water pipe is connected to the inner bottom surface of the bearing cylinder 1.

[0023] The spiral plate 6, the inner wall of the bearing cylinder 1 and the outer wall of the main water pipe together form a spiral channel; the air inlet pipe 5 penetrates the lower part of the peripheral wall of the bearing cylinder 1 and is communicated with the spiral channel.

[0024] The second water outlet holes 8 are in multiple groups, the multiple groups of second water outlet holes 8 are arranged at intervals along the height direction of the main water pipe 2, each group of second water outlet holes 8 is composed of a plurality of second water outlet holes 8 arrayed along the central axis of the main water pipe 2, and the second water outlet holes 8 are circular hole bodies; the outer end of each of the second water outlet holes 8 penetrates the outer wall of the main water pipe 2 and the inner end penetrates the inner wall of the main water pipe 2, and the plurality of second water outlet holes 8 are in a radially inclined state.

[0025] The spiral direction of the spiral plate 6 is right-handed, and the outer end of each of the second water outlet holes 8 in the same group is inclined clockwise.

[0026] During use, the exhaust gas from the dryer for drying the proppant enters the carrier cylinder 1 through the intake pipe 5. The exhaust gas entering the carrier cylinder 1 flows upward from bottom to top through the spiral channel, which can extend the flow path of the exhaust gas in the carrier cylinder 1. At the same time, the water inlet pipe 10 injects spray water into the main water pipe 2, and the spray water enters the multiple branch water pipes 3. The spray water in the branch water pipes 3 is ejected through the multiple first water outlet holes 7. When the exhaust gas flows in the spiral channel, it can come into contact with the spray water ejected from the first water outlet holes 7 multiple times. Therefore, when the exhaust gas flows through the spiral channel, it can be comprehensively sprayed by the spray water, improving the contact time and contact area between the exhaust gas and the spray water.

[0027] Moreover, due to the guiding of the spiral channel and the flow inertia of the exhaust gas, the spiral plate is right-handed. After the exhaust gas flows out from the upper end of the spiral channel, it will flow in a counterclockwise spiral shape (the counterclockwise spiral flow of the exhaust gas is Figure 1 the top-down view). The outer end of the second water outlet hole 8 is inclined clockwise, and the spray water flowing out through the second water outlet hole 8 is inclined clockwise, which is opposite to the flow direction of the exhaust gas on the upper side of the spiral plate 6. Therefore, the spray water flowing out through the second water outlet hole 8 can form a counterflush effect with the exhaust gas in the carrier cylinder 1 on the upper side of the spiral plate 6, further increasing the contact area between the exhaust gas and the spray water.

[0028] After being treated by the spray water, the exhaust gas is discharged through the upper end opening of the carrier cylinder 1, and the spray water that has treated the exhaust gas flows out through the drain pipe 4.

[0029] The preferred embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the above embodiments. Without departing from the spirit of the present invention, that is, within the scope of disclosure, any equivalent or equivalent deformation or replacement of the technical solutions of the present invention belongs to the protection scope of the present invention.

Claims

1. A waste gas treatment device for a dryer, characterized in that: The invention comprises a bearing tube (1), a main water pipe (2) and a branch water pipe (3); the bottom plate of the bearing tube (1) is connected to a drainage pipe (4); the peripheral wall of the bearing tube (1) is connected to an air intake pipe (5); one end of the main water pipe (2) is closed and the other end is open; the open end of the main water pipe (2) passes through and is fixedly connected to the bottom plate of the bearing tube (1); the open end of the main water pipe (2) is connected to a water intake pipe (10); a spiral plate (6) is fixedly arranged on the outer surface of the main water pipe (2); the spiral plate (6) 6) The outer edge is fixedly connected to the inner wall of the supporting tube (1), and the upper peripheral wall of the main water pipe (2) is provided with a branch water pipe (3) in a circular array. One end of the branch water pipe (3) is closed and the other end is open. The open end of the branch water pipe (3) is connected to the main water pipe (2) on the upper side of the spiral plate (6), and the closed end is bent downward to penetrate the spiral plate (6). A plurality of water outlet holes (7) are evenly distributed on the vertical portion of the branch water pipe (3); and a plurality of water outlet holes (8) are provided on the peripheral wall of the main water pipe (2) on the upper side of the plurality of branch water pipes (3).

2. The exhaust gas treatment device for a dryer according to claim 1, characterized in that: A plurality of supporting legs (9) are provided on the outer bottom surface of the supporting tube (1), and the water inlet pipe (10) is located at the lower side of the supporting tube (1).

3. The exhaust gas treatment device for a dryer according to claim 1, characterized in that: The branch water pipe (3) is an L-shaped pipe body consisting of a horizontal portion and a vertical portion, and the closed end of the branch water pipe is connected to the inner bottom surface of the bearing tube (1).

4. The exhaust gas treatment device for a dryer according to claim 1, characterized in that: The spiral plate (6), the inner wall of the bearing tube (1) and the outer wall of the main water pipe together form a spiral channel; the air inlet pipe (5) passes through the lower part of the peripheral wall of the bearing tube (1) and is connected to the spiral channel.

5. The exhaust gas treatment device for a dryer according to claim 1, characterized in that: The water outlet holes (8) are multiple groups, and the multiple groups of water outlet holes (8) are arranged at intervals along the height direction of the main water pipe (2). Each group of water outlet holes (8) is composed of multiple water outlet holes (8) arranged in an array along the central axis of the main water pipe (2). The outer end of each water outlet hole (8) penetrates the outer wall of the main water pipe (2) and the inner end penetrates the inner wall of the main water pipe (2). The multiple water outlet holes (8) are in a radially inclined state.

6. The exhaust gas treatment device for a dryer according to claim 5, characterized in that: The spiral direction of the spiral plate (6) is right-handed, and the outer end of each water outlet hole (8) in the same group of water outlet holes (8) is inclined clockwise.

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