Dust discharging device for chlor-alkali chemical production workshop

Abstract

The utility model discloses a dust discharge device for a chlor-alkali chemical production workshop. The dust discharge device comprises a device main body, a settling chamber, a U-shaped pipe, an induced draft fan and a plurality of wall pipes, the settling chamber is arranged in the device main body; a water pipe is mounted at the top of the settling chamber; the U-shaped pipe is mounted in a bracket in the settling chamber; the plurality of wall pipes are respectively mounted on the outer walls of different sections of the U-shaped pipe, each wall pipe is communicated with the water conveying pipe, the surface of each wall pipe is provided with atomizing nozzles at equal intervals, and the atomizing nozzles extend into the U-shaped pipe; the induced draft fan is installed on one side of the top end of the device body, the output end of the induced draft fan communicates with one end of the U-shaped pipe through a gas conveying pipe, and an exhaust pipe is installed at the input end of the induced draft fan. According to the utility model, the U-shaped pipe with a sectional structure is arranged, and the contact time of the dust-containing air and the water mist is prolonged by increasing the contact times of the dust-containing air and the water mist, so that dust in the dust-containing air is settled more thoroughly.

Description

TECHNICAL FIELD

[0001] The utility model relates to dust explosion prevention technology field, concretely is a kind of dust discharging device for chlor-alkali chemical production workshop. BACKGROUND

[0002] Chlor-alkali, namely chlor-alkali industry, refers to the process of producing sodium hydroxide (NaOH), chlorine (Cl2) and hydrogen (H2) by electrolyzing saturated brine solution. This process not only produces these basic chemical raw materials, but also produces a series of chemical products based on them, which are widely used in light industry, textile industry, metallurgical industry, petroleum chemical industry and public utilities and other fields.

[0003] In the chlor-alkali production process, the dust after calcium carbide crushing is a major pollution source. These dusts not only pollute the environment, but also can harm the health of workers. In addition, chlorine gas, hydrogen gas and other gases are also produced in the chlor-alkali production process, among which chlorine gas is highly toxic and hydrogen gas is flammable and explosive. The existence of these gases and dusts requires the factory to take strict environmental protection measures during construction and operation to ensure production safety and environmental friendliness.

[0004] Dust explosion refers to the dust cloud formed by the mixing of combustible dust with air in a confined space. Under the action of ignition source, the dust-air mixture rapidly burns and causes the temperature and pressure to rise sharply. Dust explosion often occurs in production and processing places of substances such as aluminum powder, zinc powder, aluminum material processing and grinding powder, various plastic powders, intermediates of organic synthetic drugs, wheat flour, sugar, wood chips, dyes, rubber dust, milk powder, tea powder, tobacco powder, coal dust, plant fiber dust, etc.

[0005] Dust explosion is a safety accident with great destructive power, which often accompanies serious consequences, including personnel casualties, equipment damage and production interruption, etc. Therefore, preventing dust explosion is crucial to ensure the safety of enterprise production.

[0006] Ventilation and dust removal is a key measure to prevent dust explosion. The common ventilation and dust removal method is to use a discharging device to exhaust the dust in the workshop to the outside. This measure can effectively reduce the accumulation of dust in the workshop, thereby reducing the risk of explosion. In order to reduce the environmental pollution caused by dust exhausted to the outside, water mist is usually used for dust collection. The water mist interacts with dust particles in the air, adsorbing dust particles on the surface of water droplets, thereby achieving the purpose of removing dust.

[0007] The prior art has certain research on water mist dust removal device, see patent literature with application number 201710894533.2, which discloses a water mist dust remover, water mist dust removal method and application, wherein the water mist dust remover comprises a cylinder, the cylinder is provided with an air inlet channel and an air outlet channel, and the cylinder is characterized in that at least one centrifugal fan driven by power is arranged in the cylinder, and at least one centrifugal fan is provided with an atomizing disc at the center.

[0008] Therefore, the air to be treated is introduced into the cylinder through the air inlet channel and the centrifugal fan, the water is atomized by the atomizing disc on the centrifugal fan and mixed with the air introduced into the cylinder, the dust particles absorbing water are thrown to the inner wall of the cylinder under the action of centrifugal force and collected and deposited in the collection and deposition chamber, the purified air is discharged out of the cylinder through the air outlet channel, and dust removal of the air is realized. However, since the flow speed of the dust-containing air is relatively high, and the water mist only contacts the dust-containing air once, the contact time is short, and part of the dust is not deposited and is discharged, which still pollutes the environment. Practical new type content

[0009] In order to solve the technical problem that the dust-containing air and the water mist have a short contact time in the background art, resulting in part of the dust being not deposited and being discharged, the utility model provides a dust discharge device for chlor-alkali chemical production workshop.

[0010] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0011] A dust discharge device for chlor-alkali chemical production workshop, including device main part, settlement chamber, U type pipe, air draught fan and multiple wall pipes, the settlement chamber is arranged in the inside of device main part, the settlement chamber top is installed with water delivery pipe, the device main part bottom below the settlement chamber is provided with sewage pool, the U type pipe is installed in the support inside the settlement chamber, multiple wall pipes are installed on the outer wall of different sections of the U type pipe respectively, and each wall pipe is communicated with the water delivery pipe, the surface of each wall pipe is installed with equal interval atomizing nozzle, and the atomizing nozzle extends to the inside of the U type pipe, the air draught fan is installed on one side of the device main part top, the output end of the air draught fan is communicated with one end of the U type pipe through the gas delivery pipe, and the input end of the air draught fan is installed with the air suction pipe.

[0012] Preferably, one end of the air suction pipe is installed with an air draught cover.

[0013] Preferably, the outer wall of one side of the device main part is respectively installed with an air exhaust pipe and a water discharge pipe, the air exhaust pipe is communicated with the other end of the U type pipe, the water discharge pipe is communicated with the sewage pool, and the air exhaust pipe and the water discharge pipe are used for air and sewage discharge work.

[0014] Preferably, the U-shaped tube is a serpentine structure, so that the dust-containing air flow slows down, greatly extending the contact time of the dust and the water mist.

[0015] Preferably, the bottom end of the U-shaped tube is provided with a liquid discharge pipe, and the bottom end of the liquid discharge pipe extends into the inside of the sewage pool, facilitating the discharge of sewage in the U-shaped tube into the sewage pool.

[0016] Preferably, the other side of the top end of the device body is provided with a water pump, and the output end of the water pump is communicated with the water supply pipe, providing water source for the sedimentation work.

[0017] Preferably, the inside of the induced draft hood is provided with a filter screen, which can intercept waste paper, fragments and other light impurities to prevent them from being sucked in.

[0018] Preferably, one end of the induced draft hood is provided with a hollow cover.

[0019] Preferably, the inside of the hollow cover is provided with a strip-shaped brush, which is closely attached to the filter screen to brush off the impurities adsorbed on the surface of the filter screen, preventing the filter screen from being clogged by the impurities covering the filter screen, and the dust accumulated on the filter screen can be brushed off and sucked into the air suction pipe.

[0020] Preferably, a motor is installed at the center position of the outer wall of the hollow cover, and the output end of the motor is fixedly connected with one end of the strip-shaped brush, which is used for driving the rotation of the strip-shaped brush.

[0021] In the above technical solution, the utility model has the following beneficial effects:

[0022] 1、The dust discharge device for chlor-alkali chemical production workshop of the utility model, the induced draft fan is started, the dust in the workshop is sucked into the U-shaped tube, the water is introduced into the wall pipe from the water supply pipe and sprayed from the atomizing nozzle, the water mist sprayed from the atomizing nozzle is uniformly dispersed in the U-shaped tube, the water mist absorbs and settles the dust in the air, since the wall pipe adopts the U-shaped tube, the U-shaped tube is a sectional structure, so that the dust-containing air can contact with the water mist when passing through the wall pipe on different sections of the U-shaped tube, after the contact, the dust-containing air and the water mist coagulate into water droplets, which fall down, the water droplets gather into sewage and flow to the bottom of the U-shaped tube and are discharged into the sewage pool through the liquid discharge pipe; the sectional structure U-shaped tube is provided, the contact times of the dust-containing air and the water mist are increased, the contact time of the dust-containing air and the water mist is prolonged, so that the dust in the dust-containing air is settled more thoroughly. Preferably, the U-shaped tube is a serpentine structure, so that the flow speed of the dust-containing air is further slowed down, thereby further prolonging the contact time of the dust-containing air and the water mist and further improving the dust settling effect in the dust-containing air.

[0023] 2. The chlor-alkali chemical production workshop dust emission device of the utility model, one end of the air induction hood is provided with a hollow cover, and a strip-shaped brush is installed in the hollow cover, which facilitates brushing off the impurities adsorbed on the surface of the filter screen, prevents the filter screen from being blocked by impurities covering the filter screen, and simultaneously, the strip-shaped brush can scatter the dust accumulated on the filter screen and suck it into the air suction pipe, improving the filtering effect of the filter screen. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a front view cross-sectional structure schematic diagram of the utility model;

[0025] Figure 2 It is a U-shaped tube cross-sectional enlarged structure schematic diagram of the utility model;

[0026] Figure 3 It is a Figure 2 enlarged structure schematic diagram of the utility model at A;

[0027] Figure 4 It is an air induction hood cross-sectional enlarged structure schematic diagram of the utility model;

[0028] Figure 5 It is a hollow cover front view enlarged structure schematic diagram of the utility model.

[0029] In the drawing: 1, device main body; 2, settling chamber; 3, exhaust pipe; 4, support; 5, U-shaped tube; 6, water pump; 7, water delivery pipe; 8, gas delivery pipe; 9, air induction fan; 10, air suction pipe; 11, air induction hood; 12, sewage pool; 13, drainage pipe; 14, wall pipe; 15, liquid discharge pipe; 16, atomizing nozzle; 17, filter screen; 18, hollow cover; 19, strip-shaped brush; 20, motor. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the utility model.

[0031] The technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the utility model.

[0032] Please refer toFigures 1-5 The utility model provides a kind of embodiment of chlor-alkali chemical production workshop dust discharging device, including device main body 1, settling chamber 2, U type pipe 5, induced draft fan 9 and multiple wall pipes 14, settling chamber 2 is arranged in the inside of device main body 1, U type pipe 5 is installed in the support 4 inside settling chamber 2, multiple wall pipes 14 are respectively installed on the outer wall of different section of U type pipe 5, and the surface of each wall pipe 14 is installed with equal interval atomizing nozzle 16, atomizing nozzle 16 extends to the inside of U type pipe 5, the top of settling chamber 2 above U type pipe 5 is installed with water delivery pipe 7, water delivery pipe 7 is communicated with wall pipe 14, the bottom of device main body 1 below settling chamber 2 is provided with sewage tank 12.

[0033] Specifically, dust-containing air enters into the U type pipe 5 inside the settling chamber 2 through the gas delivery pipe 8, the dust-containing air enters from one end of the U type pipe 5, circulates and settles in the inside of the U type pipe 5, and moves to the other end of the U type pipe 5 and is discharged from the exhaust pipe 3, in this process, the water pump 6 introduces the external water source into the water delivery pipe 7, the water enters the wall pipe 14 and is sprayed from the atomizing nozzle 16, the water mist sprayed from the atomizing nozzle 16 is uniformly dispersed in the U type pipe 5, and the water mist absorbs and settles the dust in the air, since the wall pipe 14 is designed in a segmented manner, when the dust-containing air passes through each wall pipe 14, it can contact the water mist, and when the dust-containing air circulates in the U type pipe 5, it contacts the water mist multiple times and coagulates into water droplets and falls down, the water droplets gather into sewage and flow to the bottom of the U type pipe 5 and are discharged into the sewage tank 12 through the liquid discharge pipe 15.

[0034] The induced draft fan 9 is installed on one side of the top end of the device main body 1, the output end of the induced draft fan 9 is communicated with one end of the U type pipe 5 through the gas delivery pipe 8, and the input end of the induced draft fan 9 is installed with the air suction pipe 10, one end of the air suction pipe 10 is installed with the induced draft hood 11.

[0035] Specifically, the induced draft fan 9 is started to suck the dust in the workshop through the air suction pipe 10 and the induced draft hood 11, the dust-containing air first enters the induced draft hood 11, and the filter screen 17 can intercept the waste paper, fragments and other light impurities to prevent them from being sucked in.

[0036] The outer wall of one side of the device main body 1 is respectively installed with the exhaust pipe 3 and the water drain pipe 13, the exhaust pipe 3 is communicated with the other end of the U type pipe 5, and the water drain pipe 13 is communicated with the sewage tank 12.

[0037] The U type pipe 5 is a serpentine structure.

[0038] Specifically, since the U type pipe 5 is a serpentine structure, the flow velocity of the dust-containing air is slowed down, which greatly prolongs the contact time of the dust and the water mist, so that the dust settles more thoroughly.

[0039] The bottom end of the U type pipe 5 is installed with the liquid discharge pipe 15, and the bottom end of the liquid discharge pipe 15 extends to the inside of the sewage tank 12.

[0040] The other side of the top end of the device body 1 is provided with a water pump 6, and the output end of the water pump 6 is communicated with a water delivery pipe 7.

[0041] The inside of the air induction hood 11 is provided with a filter screen 17.

[0042] One end of the air induction hood 11 is provided with a hollow cover 18, and the inside of the hollow cover 18 is provided with a strip-shaped brush 19 which is closely attached to the filter screen 17.

[0043] The center position of the outer wall of the hollow cover 18 is provided with a motor 20, and the output end of the motor 20 is fixedly connected with one end of the strip-shaped brush 19.

[0044] Specifically, the motor 20 drives the strip-shaped brush 19 to rotate, the strip-shaped brush 19 brushes off the impurities adsorbed on the surface of the filter screen 17, prevents the impurities from covering the filter screen 17 and clogging the filter screen 17, and can also brush off the dust accumulated on the filter screen 17 and make it be sucked into the air suction pipe 10.

[0045] In use, first, the device body 1 is arranged outside the workshop, the air induction hood 11 is arranged inside the workshop, the air induction fan 9 is started to make it suck the dust in the workshop through the air suction pipe 10 and the air induction hood 11, the dust-containing air first enters the air induction hood 11, the filter screen 17 can intercept the light impurities such as waste paper and fragments to prevent them from being sucked in, in this process, the motor 20 drives the strip-shaped brush 19 to rotate, the strip-shaped brush 19 brushes off the impurities adsorbed on the surface of the filter screen 17, prevents the impurities from covering the filter screen 17 and clogging the filter screen 17, and can also brush off the dust accumulated on the filter screen 17 and make it be sucked into the air suction pipe 10, then, the dust-containing air enters the U-shaped pipe 5 inside the settling chamber 2 through the air delivery pipe 8, the dust-containing air enters from one end of the U-shaped pipe 5, flows and settles inside the U-shaped pipe 5, and moves to the other end of the U-shaped pipe 5 and is discharged from the air exhaust pipe 3, in this process, the water pump 6 introduces the external water source into the water delivery pipe 7, the water enters the wall pipe 14 and is sprayed from the atomizing nozzle 16, the water mist sprayed from the atomizing nozzle 16 is uniformly dispersed in the U-shaped pipe 5, the water mist absorbs and settles the dust in the air, since the wall pipe 14 is designed in a segmented manner, the dust-containing air can contact the water mist when passing through each wall pipe 14, the dust-containing air flows in the U-shaped pipe 5 and contacts the water mist multiple times and coagulates into water droplets which fall down, the water droplets gather into sewage which flows to the bottom of the U-shaped pipe 5 and is discharged into the sewage tank 12 through the liquid discharge pipe 15, and since the U-shaped pipe 5 is in a serpentine structure, the flow speed of the dust-containing air is slowed down, the contact time of the dust and the water mist is greatly prolonged, so that the dust is settled more thoroughly, finally, the air from which the dust is removed is discharged through the air exhaust pipe 3, and the sewage in the sewage tank 12 is discharged through the water discharge pipe 13.

[0046] Obviously, the above-described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the protection scope of the present application.

Claims

1. A dust emission device for a chlor-alkali chemical production workshop, characterized in that, It includes the main body of the device (1), a settling chamber (2), a U-shaped pipe (5), an induced draft fan (9), and multiple wall pipes (14); The settling chamber (2) is located inside the main body (1) of the device. A water supply pipe (7) is installed on the top of the settling chamber (2). A sewage tank (12) is installed at the bottom of the main body (1) below the settling chamber (2). The U-shaped tube (5) is installed in the bracket (4) inside the settling chamber (2); Multiple wall tubes (14) are respectively installed on the outer wall of different sections of the U-shaped tube (5), and each wall tube (14) is connected to the water supply pipe (7). Each wall tube (14) is equipped with atomizing nozzles (16) at equal intervals on its surface, and the atomizing nozzles (16) extend into the interior of the U-shaped tube (5). The induced draft fan (9) is installed on one side of the top of the main body (1) of the device, and the output end of the induced draft fan (9) is connected to one end of the U-shaped pipe (5) through the air supply pipe (8), and the input end of the induced draft fan (9) is equipped with an exhaust pipe (10).

2. The dust emission device for a chlor-alkali chemical production workshop according to claim 1, characterized in that: One end of the exhaust pipe (10) is equipped with an exhaust hood (11).

3. The dust emission device for a chlor-alkali chemical production workshop according to claim 1, characterized in that: An exhaust pipe (3) and a drain pipe (13) are respectively installed on the outer wall of one side of the main body (1) of the device. The exhaust pipe (3) is connected to the other end of the U-shaped pipe (5), and the drain pipe (13) is connected to the sewage tank (12).

4. A dust emission device for a chlor-alkali chemical production workshop according to any one of claims 1-3, characterized in that: The U-shaped tube (5) has a serpentine structure.

5. The dust emission device for a chlor-alkali chemical production workshop according to claim 1, characterized in that: The bottom end of each U-shaped tube (5) is equipped with a drain pipe (15), and the bottom end of the drain pipe (15) extends into the interior of the sewage tank (12).

6. The dust emission device for a chlor-alkali chemical production workshop according to claim 1, characterized in that: A water pump (6) is installed on the other side of the top of the main body (1) of the device, and the output end of the water pump (6) is connected to the water supply pipe (7).

7. A dust emission device for a chlor-alkali chemical production workshop according to claim 2, characterized in that: The air hood (11) is equipped with a filter screen (17).

8. The dust emission device for a chlor-alkali chemical production workshop according to claim 7, characterized in that: A perforated cover (18) is installed at one end of the air intake cover (11).

9. A dust emission device for a chlor-alkali chemical production workshop according to claim 8, characterized in that: A strip brush (19) is installed inside the perforated cover (18), and the strip brush (19) is in close contact with the filter screen (17).

10. A dust emission device for a chlor-alkali chemical production workshop according to claim 9, characterized in that: A motor (20) is installed at the center of the outer wall of the hollow cover (18), and the output end of the motor (20) is fixedly connected to one end of the strip brush (19).

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