A tar smoke pre-filter device

Abstract

The utility model discloses a tar smoke pre-filter device, including a box body and a filtering mechanism, the filtering mechanism including semicircular cooling fins and a cold water circulation system, the cold water circulation system including a cold water inlet pipe, a cooling water pipe and a cold water outlet pipe, a cooling water pipe is arranged in the box body, the cold water inlet pipe is inserted into the box body from one side and connected to the total water inlet of the cooling water pipe, the cold water outlet pipe is inserted into the box body from the other side and connected to the total water outlet of the cooling water pipe, a semicircular cooling fin is arranged on the cooling water pipe, a temperature transmitter, a differential pressure transmitter, a flue gas inlet pipe and a flue gas outlet pipe are arranged on the box body, and a V-shaped hopper with a hopper valve is arranged at the lower end of the box body. The utility model cools the asphalt flue gas by circulating water, and uses the semicircular cooling fins to filter the tar and water vapor in the asphalt flue gas, so as to reduce the tar and water vapor content entering the black method dust collector or flue gas incinerator, and prolong the service life of the black method dust collector or flue gas incinerator.

Description

Technical Field

[0001] The utility model relates to a filtering device, in particular to a tar smoke pre-filtering device. Background Art

[0002] As China's environmental problems become increasingly prominent, the carbon industry faces huge environmental challenges. The treatment of tar flue gas generated during carbon production is a difficult problem for the carbon industry. At present, tar flue gas is mostly treated by black method or flue gas incinerator, but the content of tar and water vapor in asphalt flue gas will affect the service life of black method dust collector and flue gas incinerator. It is necessary to design a set of pre-filters to reduce the tar and water vapor content in the asphalt flue gas leading to the black method dust collector or incinerator, so as to extend the service life of the black method dust collector or incinerator, reduce the burden of the black method dust collector or flue gas incinerator, and then reduce the gas consumption of the flue gas incinerator to meet environmental protection requirements. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art and provide a tar flue gas pre-filter device with a simple structure, which cools the flue gas through circulating water and filters tar and water vapor through semicircular cooling fins, thereby reducing the tar and water vapor content entering a black method dust collector or a flue gas incinerator and extending the service life of the black method dust collector or the flue gas incinerator.

[0004] In order to solve the above technical problems, a technical solution provided by the utility model is:

[0005] A tar smoke pre-filter device comprises a box body and a filtering mechanism.

[0006] The upper end of the box is provided with a box cover, the lower end is provided with a V-shaped hopper, the lower end of the V-shaped hopper is provided with a hopper valve, the interior of the box is connected with the V-shaped hopper, the objects dropped in the box can slide to the bottom of the V-shaped hopper, and the objects in the V-shaped hopper can slide out when the hopper valve is opened.

[0007] A bracket is provided at the lower end of the V-shaped hopper, and the bracket not only supports the box body and the V-shaped hopper, but also facilitates the taking out of the articles in the V-shaped hopper.

[0008] The filtering mechanism comprises semicircular cooling fins and a cold water circulation system, wherein the cold water circulation system comprises a cold water inlet pipe, a cooling water pipe and a cold water outlet pipe.

[0009] The cooling water pipe is arranged in the box body, and the cooling water pipe is arranged inside the box body at an inclined angle of 45 degrees. A storage plate is arranged at the contact point between the cooling water pipe and the bottom end of the box body.

[0010] The cooling water pipes are arranged in two groups, each group includes at least three cooling water pipes, and the three cooling water pipes are arranged in two rows in an alternating manner. Semicircular cooling fins are arranged on both sides of the back of each cooling water pipe, and no two adjacent semicircular cooling fins are in contact with each other.

[0011] One end of the two groups of cooling water pipes is connected to the main water inlet pipe, which is provided with a main water inlet, and the other end of the two groups of cooling water pipes is connected to the main water outlet pipe, which is provided with a main water outlet.

[0012] A first through hole is provided on one side of the box body, and the cold water inlet pipe is inserted through the first through hole into the interior of the box body and connected to the main water inlet.

[0013] A second through hole is provided on the other side of the box body, and the cold water outlet pipe is inserted through the second through hole into the interior of the box body and connected to the main water outlet.

[0014] The cold water inlet pipe outside the box is provided with a cooling water inlet electric valve F1, and the cold water inlet pipe between the cooling water inlet electric valve F1 and the box is also provided with a steam inlet pipe with a steam inlet electric valve F2.

[0015] The cold water outlet pipe outside the box is provided with a cooling water outlet electric valve F3, and the cold water outlet pipe between the cooling water outlet electric valve F3 and the box is also provided with a steam outlet pipe with a steam outlet electric valve F4.

[0016] Open the cooling water inlet electric valve F1 and the cooling water outlet electric valve F3, input the cooling water for circulation from the cold water inlet pipe, flow through the cooling water pipe, and then output from the cold water outlet pipe. The flowing cooling water can take away the temperature inside the box and cool the semicircular cooling fins.

[0017] The box body is also provided with a smoke inlet pipe and a smoke outlet pipe, so that the tar smoke generated during the production of carbon can enter the box body for filtration.

[0018] The box body is provided with a temperature transmitter for monitoring the temperature inside the box body and a pressure difference transmitter for monitoring the pressure difference inside the box body.

[0019] The cooling water inlet electric valve F1, the steam inlet electric valve F2, the cooling water outlet electric valve F3, the steam outlet electric valve F4, the temperature transmitter and the differential pressure transmitter are all connected to the PLC control system.

[0020] The temperature transmitter monitors the temperature inside the box in real time and feeds the temperature back to the PLC control system. When the temperature inside the box rises to 100 degrees Celsius, the temperature transmitter feeds the temperature inside the box back to the PLC control system. The PID control electric regulating valve of the PLC control system ensures that the temperature inside the box remains stable at around 100 degrees Celsius.

[0021] The differential pressure transmitter detects the pressure at the flue gas inlet pipe and the flue gas outlet pipe in the box respectively, and transmits the pressure values ​​at the two places back to the PLC control system in real time. The PLC control system compares the analog signal transmitted by the differential pressure transmitter with the set differential pressure blockage value.

[0022] When the asphalt flue gas enters the box through the flue gas inlet pipe, the volume of the internal space of the box becomes larger than that of the flue gas inlet pipe, the flow rate of the asphalt flue gas decreases, and the low-speed asphalt flue gas is in full contact with the semicircular cooling fins. At this time, the temperature of the asphalt flue gas is 60-70 degrees Celsius. The asphalt flue gas at 60-70 degrees Celsius slowly passes through the gaps between multiple semicircular cooling fins in an S-bend. Since there is a cooling water pipe on the back of the semicircular cooling fins, and circulating cooling water flows in the cooling water pipe, the temperature of the asphalt flue gas quickly drops to 30-40 degrees Celsius, and the water vapor and tar in the asphalt flue gas condense and adsorb on the two rows of semicircular cooling fins. Since the semicircular cooling fins are at 45° to the bottom of the box, the bonded tar and water fall into the V-shaped hopper below, and the tar and water can be discharged regularly through the valve under the V-shaped hopper for centralized treatment.

[0023] When the device is running, the differential pressure transmitter will monitor the internal pressure difference of the box all the time. After the device has been running for a period of time, the tar attached to the semicircular cooling fins that cannot fall off will cause the device to be blocked, and the pressure at the flue gas inlet pipe and the flue gas outlet pipe inside the box will change. The differential pressure transmitter will transmit the changing pressure difference back to the PLC control system in real time. The PLC control system compares the analog signal transmitted by the differential pressure transmitter with the set pressure difference blockage value. If the set pressure difference value is exceeded, the PLC control system controls the closure of the cooling water inlet electric valve F1 and the cooling water outlet electric valve F3. After the cooling water inlet electric valve F1 and the cooling water outlet electric valve F3 are closed, The PLC control system outputs a 4-20MA signal to the steam inlet electric valve F2 and the steam outlet electric valve F4, so that the steam inlet electric valve F2 and the steam outlet electric valve F4 are slowly opened, and steam enters the box. The temperature transmitter monitors the temperature in the box in real time and feeds the temperature back to the PLC control system. The temperature in the box rises. When the temperature in the box rises to 100 degrees Celsius, the PID control electric regulating valve of the PLC control system is used to ensure that the temperature in the box is always stable at about 100 degrees Celsius. At this time, the tar on the semicircular cooling fins melts and slides into the hopper under the action of high temperature, and the pressure difference between the pressure at the flue gas inlet pipe and the pressure at the flue gas outlet pipe decreases. The differential pressure transmitter sends the differential pressure signal to the PLC control system. After the differential pressure returns to normal, the PLC control system controls the steam inlet electric valve F2 and the steam outlet electric valve F4 to close. After closing, the PLC control system controls the opening of the cooling water inlet electric valve F1 and the cooling water outlet electric valve F3, and the filtering function in this device resumes normal use.

[0024] The beneficial effects of the utility model are:

[0025] The device has a simple structure, cools the asphalt flue gas through circulating water, and uses semicircular cooling fins to filter tar and water vapor in the asphalt flue gas, which can reduce the tar and water vapor content entering the black method dust collector or flue gas incinerator, extend the service life of the black method dust collector or flue gas incinerator, and reduce the gas consumption of flue gas incineration.

[0026] In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the description of the embodiments are briefly introduced below. Obviously, the drawings described below are only two of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 The structure diagram of the device is shown in FIG.

[0029] Figure 2 A diagram showing the connection relationship between the cooling water pipe and the semicircular cooling fins in the embodiment;

[0030] Figure 3 for Figure 2 Position relationship diagram between the cooling water pipe and the semicircular cooling fins;

[0031] Figure 4 It is a circuit diagram between the temperature transmitter and the differential pressure transmitter and the PLC control system in the embodiment.

[0032] In the figure:

[0033] 1-box, 2-V-shaped hopper, 3-hopper valve, 4-bracket, 5-cooling water pipe, 6-semicircular cooling fins, 7-main water inlet pipe, 8-main water outlet pipe, 9-cold water inlet pipe, 10-cold water outlet pipe, 11-steam inlet pipe, 12-steam outlet pipe, 13-smoke inlet pipe, 14-smoke outlet pipe, 15-temperature transmitter, 16-pressure differential transmitter, F1-cooling water inlet electric valve, F2-steam inlet electric valve, F3-cooling water outlet electric valve, F4-steam outlet electric valve;

[0034] A-asphalt fume, A1-filtered asphalt fume, B-steam, B1-filtered steam, C-cooling water, C1-filtered cooling water;

[0035] K1-K4 are remote local transfer switches, K5-k6 are circuit breakers, SB1-SB4 are local buttons, KA1-KA4 are intermediate relays, DK1-DK3 are DC circuit breakers, R1 is insurance, PL00-PLC03 are PLC control output points, and F1-F4 are electric valves. DETAILED DESCRIPTION

[0036] The embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as being limited to the embodiments described herein. Instead, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the drawings and embodiments of the present invention are only for exemplary purposes and are not intended to limit the scope of protection of the present invention.

[0037] In the present utility model, unless otherwise clearly stipulated and limited, terms such as "installation", "setting", "connection", "fixation", and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to the specific circumstances.

[0038] The names of the messages or information exchanged between multiple devices in the implementation manner of the present utility model are only used for illustrative purposes, and are not used to limit the scope of these messages or information. Example

[0039] A tar smoke pre-filter device comprises a box body 1, a box body cover is arranged at the upper end of the box body 1, a V-shaped hopper 2 is arranged at the lower end, a hopper valve 3 is arranged at the lower end of the V-shaped hopper 2, the interior of the box body 1 is connected with the V-shaped hopper 2, and a bracket 4 is arranged at the lower end of the V-shaped hopper 2.

[0040] A cooling water pipe 5 is arranged inside the box body 1 , and the cooling water pipe 5 is arranged inside the box body 1 at an inclined angle of 45°. A storage plate is arranged at the contact point between the cooling water pipe 5 and the bottom end of the box body 1 .

[0041] Two groups of cooling water pipes 5 are provided, each group includes six cooling water pipes 5, and the six cooling water pipes 5 are arranged in two rows in an alternating manner. Semicircular cooling fins 6 are provided on both sides of the back of each cooling water pipe 5, and no two adjacent semicircular cooling fins 6 are in contact with each other, so that the asphalt flue gas A can pass through the gap between the semicircular cooling fins 6 in an S-bend.

[0042] One end of the two groups of cooling water pipes 5 is connected to the main water inlet pipe 7, which is provided with a main water inlet, and the other end of the two groups of cooling water pipes 5 is connected to the main water outlet pipe 8, which is provided with a main water outlet.

[0043] The cold water inlet pipe 9 penetrates through the first through hole on one side of the box body 1 into the interior of the box body 1 and is connected to the main water inlet.

[0044] The cold water outlet pipe 10 penetrates into the interior of the box body 1 from the second through hole on the other side of the box body 1 and is connected to the main water outlet.

[0045] A cooling water inlet electric valve F1 is provided on the cold water inlet pipe 9 outside the housing 1 , and a steam inlet pipe 11 with a steam inlet electric valve F2 is also provided on the cold water inlet pipe 9 between the cooling water inlet electric valve F1 and the housing 1 .

[0046] A cooling water outlet electric valve F3 is provided on the cold water outlet pipe 10 outside the box body 1 , and a steam outlet pipe 12 with a steam outlet electric valve F4 is also provided on the cold water outlet pipe 10 between the cooling water outlet electric valve F3 and the box body 1 .

[0047] The box body 1 is also provided with a smoke inlet pipe 13 , a smoke outlet pipe 14 , a temperature transmitter 15 and a pressure difference transmitter 16 .

[0048] The cooling water inlet electric valve F1, the steam inlet electric valve F2, the cooling water outlet electric valve F3, the steam outlet electric valve F4, the temperature transmitter 15 and the differential pressure transmitter 16 are all connected to the PLC control system.

[0049] During filtering, open the cooling water inlet electric valve F1 and the cooling water outlet electric valve F3, input the cooling water C for circulation from the cold water inlet pipe 9, and after flowing through the cooling water pipe 5, the cooling water C is output from the cold water outlet pipe 10.

[0050] The asphalt flue gas A enters the box body 1 through the flue gas inlet pipe 13, and the flow rate of the asphalt flue gas A is reduced. The low-speed asphalt flue gas A is fully in contact with the semicircular cooling fins 6. At this time, the temperature of the asphalt flue gas A is 60-70 degrees Celsius. The asphalt flue gas A at 60-70 degrees Celsius slowly passes through the gaps between multiple semicircular cooling fins 6 in an S-bend. Since the back of the semicircular cooling fins 6 is connected with a cooling water pipe 5, and circulating cooling water C flows in the cooling water pipe 5, the temperature of the asphalt flue gas A quickly drops to 30-40 degrees Celsius, and the water vapor and tar in the asphalt flue gas A condense and adsorb on the two rows of semicircular cooling fins 6. Since the semicircular cooling fins 6 are 45 degrees to the bottom of the box body 1 in the box body 1, the bonded tar and water fall into the V-shaped hopper 2 below, and the tar and water can be regularly discharged through the valve under the V-shaped hopper 2 for centralized treatment. The filtered asphalt flue gas A1 enters the black method dust collector or flue gas incinerator through the flue gas outlet pipe 14.

[0051] During operation, the differential pressure transmitter 16 will monitor the internal differential pressure of the box 1 all the time. After the device has been running for a period of time, the tar attached to the semicircular cooling fins 6 that cannot fall off will cause the device to be blocked, and the pressure at the flue gas inlet pipe 13 and the pressure at the flue gas outlet pipe 14 inside the box 1 will change. The differential pressure transmitter 16 will transmit the changed differential pressure back to the PLC control system in real time. The PLC control system controls the closing of the cooling water inlet electric valve F1 and the cooling water outlet electric valve F3. After the cooling water inlet electric valve F1 and the cooling water outlet electric valve F3 are closed, the PLC control system outputs a 4-20MA signal to the steam inlet electric valve F2 and the steam outlet electric valve F4, so that the steam inlet electric valve F2 and the steam outlet electric valve F4 are slowly opened, and steam B enters the box 1. The temperature transmitter 15 monitors the temperature in the box 1 in real time and feeds the temperature back to the PLC control system. The temperature in the box 1 rises. When the temperature in the box 1 rises to 100 degrees Celsius, the PLC control system is used. The PID controlled electric regulating valve ensures that the temperature in the box body 1 is always stable at about 100 degrees Celsius. At this time, the tar on the semicircular cooling fins 6 melts and slides into the hopper under the action of high temperature, and the pressure difference between the flue gas inlet pipe 13 and the flue gas outlet pipe 14 is reduced. The differential pressure transmitter 16 sends the differential pressure signal to the PLC control system. After the differential pressure returns to normal, the PLC control system controls the steam inlet electric valve F2 and the steam outlet electric valve F4 to close. After closing, the PLC control system controls the opening of the cooling water inlet electric valve F1 and the cooling water outlet electric valve F3, and the filtering function in this device resumes normal use.

[0052] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A tar smoke pre-filter device, comprising a housing and a filtering mechanism, characterized in that: The filtering mechanism includes semicircular cooling fins and a cold water circulation system, and the cold water circulation system includes a cold water inlet pipe, a cooling water pipe and a cold water outlet pipe. The cooling water pipe is arranged in the box body, and the cold water inlet pipe is inserted into the inside of the box body from one side of the box body and is connected to the total water inlet of the cooling water pipe. The cold water outlet pipe is inserted into the inside of the box body from the other side of the box body and is connected to the total water outlet of the cooling water pipe. The semicircular cooling fins are arranged on the cooling water pipe, and the box body is provided with a temperature transmitter for monitoring the internal temperature of the box body and a pressure differential transmitter for monitoring the internal pressure difference of the box body.

2. The tar smoke pre-filter device according to claim 1 is characterized in that: The cooling water pipes are arranged in two groups, each group includes at least three cooling water pipes, and the three cooling water pipes are arranged in two rows in an alternating manner. Semicircular cooling fins are arranged on both sides of the back of each cooling water pipe, and no two adjacent semicircular cooling fins are in contact with each other.

3. The tar smoke pre-filter device according to claim 2 is characterized in that: The cooling water pipe is arranged inside the box in an inclined manner, forming an angle of 45° with the horizontal plane of the bottom of the box.

4. The tar smoke pre-filter device according to claim 3 is characterized in that: The cold water inlet pipe is provided with a cooling water inlet electric valve F1, and the cold water inlet pipe between the cooling water inlet electric valve F1 and the box body is also provided with a steam inlet pipe with a steam inlet electric valve F2; The cold water outlet pipe is provided with a cooling water outlet electric valve F3, and the cold water outlet pipe between the cooling water outlet electric valve F3 and the box body is also provided with a steam outlet pipe with a steam outlet electric valve F4.

5. The tar smoke pre-filter device according to claim 4 is characterized in that: The box body is also provided with a smoke inlet pipe and a smoke outlet pipe, the lower end of the box body is provided with a V-shaped hopper, and the lower end of the V-shaped hopper is provided with a hopper valve.

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