Bag-type dust collector for purifying calcium carbide furnace gas

Abstract

The utility model relates to the technical field of bag-type dust removers, in particular to a bag-type dust remover for purifying calcium carbide furnace gas, which comprises a box body, a gas inlet mechanism arranged on the right side of the box body, an exhaust pipe arranged on the left upper part of the box body, a mounting frame fixed in the box body, and a plurality of dust removing bags arranged on the mounting frame, a blowing-off mechanism is mounted on the portion, above the mounting frame, of the box body, a heat recovery mechanism connected with the air inlet mechanism is mounted on the right side of the box body, the heat recovery mechanism comprises a water storage tank, a water pump, a water supply pipe, a spiral pipe, a backflow pipe, a steam output pipe and a steam turbine generator, and the water storage tank, the water pump and the steam turbine generator are all arranged on the ground; the water pump is connected with the water storage tank through a pipeline and connected with one end of the spiral pipe through a water supply pipe, the other end of the spiral pipe is connected with the water storage tank through a backflow pipe, and the water storage tank is communicated with the steam turbine generator. The high-temperature gas discharged by the calcium carbide furnace is conveniently filtered, heat is conveniently recovered, and energy is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of bag dust collectors, in particular to a bag dust collector used for purifying calcium carbide furnace gas. Background Art

[0002] Bag filter is a dry dust filtering device. It is suitable for capturing fine, dry, non-fibrous dust.

[0003] Calcium carbide furnace is the main equipment for producing calcium carbide. In the calcium carbide furnace, the high temperature generated by the electric arc causes the charge to melt and react to produce calcium carbide.

[0004] When the calcium carbide furnace is in operation, it will discharge a large amount of high-temperature gas, which also contains a large amount of dust. At present, bag dust collectors are used to filter the exhaust gas discharged from the calcium carbide furnace. However, the existing bag dust collectors can only filter the dust and directly discharge the gas after filtering, which causes a large amount of heat in the high-temperature gas to be lost, wasting energy.

[0005] In view of the above situation, a bag dust collector for purifying calcium carbide furnace gas has been developed, which is convenient for filtering high-temperature gas discharged from the calcium carbide furnace, recovering heat and saving energy, in order to overcome the shortcomings in current practical applications and meet current needs. Utility Model Content

[0006] The purpose of the utility model is to propose a bag dust collector for purifying calcium carbide furnace gas, which solves the problem that the existing bag dust collector can only filter dust and directly discharge the gas after filtering, resulting in a large amount of heat loss in the high-temperature gas and a waste of energy.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A bag dust collector for purifying calcium carbide furnace gas comprises a box body, an air intake mechanism, an exhaust pipe, a blow-off mechanism, a heat recovery mechanism and a mounting frame. The right side of the box body is equipped with an air intake mechanism extending into the interior thereof, the upper left side of the box body is provided with an exhaust pipe, the box body is fixed with a mounting frame, a plurality of dust removal bags are installed on the mounting frame, a blow-off mechanism is installed on the box body above the mounting frame, a heat recovery mechanism connected to the air intake mechanism is installed on the right side of the box body, the heat recovery mechanism comprises: a water storage tank, a water pump, a water supply pipe, a spiral pipe, a reflux pipe, a steam output pipe and a steam turbine generator, the water storage tank, the water pump and the steam turbine generator are all arranged on the ground, the water pump is connected to the water storage tank through a pipeline, the water pump is connected to one end of the spiral pipe through a water supply pipe, the other end of the spiral pipe is connected to the water storage tank through a reflux pipe, and the water storage tank is connected to the steam turbine generator through the steam output pipe.

[0009] On the basis of the above scheme and as a preferred scheme of the above scheme: an ash storage hopper is arranged at the lower end of the box body, and an end cover is detachably installed at the bottom of the ash storage hopper.

[0010] On the basis of the above scheme and as a preferred scheme of the above scheme: the air intake mechanism includes: an air intake pipe, an annular tube and an air outlet nozzle, the air intake pipe is fixed to the box body, the left end of the air intake pipe is connected to the annular tube, and a plurality of air outlet nozzles are arranged in the annular tube.

[0011] On the basis of the above scheme and as a preferred scheme of the above scheme: the spiral tube is wound around the outside of the annular tube, and the annular tube and the spiral tube are both made of copper.

[0012] On the basis of the above scheme and as a preferred scheme of the above scheme: a plug is detachably installed on the water storage tank.

[0013] On the basis of the above scheme and as a preferred scheme of the above scheme: the blowing-off mechanism includes: a main tube, a diversion tube and a nozzle, the main tube is fixed on the box body, a plurality of diversion tubes are connected to the main tube, and a plurality of nozzles are arranged on the lower side of the diversion tube.

[0014] In order to solve the problem that the existing bag filter can only filter the dust and directly discharge the gas after filtering, resulting in a large amount of heat loss in the high-temperature gas and waste of energy, the utility model has the following beneficial effects:

[0015] The utility model is convenient for filtering the high-temperature gas discharged from the calcium carbide furnace, is convenient for heat recovery, and saves energy.

[0016] When the bag dust collector for purifying gas from a calcium carbide furnace of the utility model is used, the high-temperature exhaust gas discharged from the calcium carbide furnace is passed from the air inlet pipe into the annular pipe, and the gas is dispersed into the box body through a plurality of air outlet nozzles. At the same time, the water in the water storage tank is transported to the spiral pipe through a water pump, and the water flow in the spiral pipe is heated by the high-temperature gas in the annular pipe, and the heated water flow returns to the water storage tank from the reflux pipe, thereby circulating and heating the water. When the water is heated to a high temperature, the high-temperature steam generated is input into the steam turbine generator from the steam output pipe, and the steam turbine generator is driven by the high-temperature steam to generate electricity, thereby realizing heat recovery and utilization. After entering the box body, the gas passes through a plurality of dust removal bags upward, and the dust in the gas is filtered by the dust removal bags, and the filtered gas is discharged from the exhaust pipe. After being used for a period of time, a high-pressure airflow is blown toward the dust removal bags through a blowing-off mechanism, thereby causing the dust accumulated on the dust removal bags to fall off.

[0017] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The three-dimensional structure of the utility model is shown in FIG. Figure 1 ;

[0019] Figure 2 The three-dimensional structure of the utility model is shown in FIG. Figure 2 ;

[0020] Figure 3 It is an internal cross-sectional view of the utility model;

[0021] Figure 4 It is a partial structure diagram of the utility model Figure 1 ;

[0022] Figure 5 It is a partial structure diagram of the utility model Figure 2 . DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present utility model are clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all the embodiments.

[0024] See also Figure 1-5 In the embodiment of the utility model, a bag dust collector for purifying calcium carbide furnace gas includes a box body 1, an air intake mechanism 2, an exhaust pipe 3, a blow-off mechanism 4, a heat recovery mechanism 5, a support leg 6, an end cover 7 and a mounting frame 8. The lower end of the box body 1 is provided with an ash storage hopper 101, and the bottom of the ash storage hopper 101 is detachably installed with an end cover 7. By removing the end cover 7, the dust stored in the ash storage hopper 101 can be discharged. A plurality of support legs 6 are installed at the bottom of the box body 1, an air intake mechanism 2 extending to the inside of the box body 1 is installed on the right side of the box body 1, an exhaust pipe 3 is arranged on the upper left side of the box body 1, a mounting frame 8 is fixed in the box body 1, a plurality of dust removal bags 801 are installed on the mounting frame 8, and the top of the mounting frame 8 is above the box body 1. A blowing-off mechanism 4 is installed on it, and the blowing-off mechanism 4 is connected to an external high-pressure gas source. A heat recovery mechanism 5 connected to the air intake mechanism 2 is installed on the right side of the box body 1. When in use, the high-temperature gas discharged from the calcium carbide furnace is transported from the air intake mechanism 2 to the box body 1, and the heat of the high-temperature gas in the air intake mechanism 2 is absorbed by the heat recovery mechanism 5 to generate electricity, which can save energy and reduce the temperature of the gas. After the gas enters the box body 1, it passes through multiple dust bags 801 upward, and the dust in the gas is filtered by the dust bags 801. The filtered gas is discharged from the exhaust pipe 3. After a period of use, a high-pressure airflow is blown toward the dust bags 801 through the blowing-off mechanism 4, so that the dust accumulated on the dust bags 801 falls off.

[0025] The air intake mechanism 2 includes: an air intake pipe 201, an annular pipe 202 and an air outlet nozzle 203. The air intake pipe 201 is fixed to the box body 1. The left end of the air intake pipe 201 is connected to the annular pipe 202. A plurality of air outlet nozzles 203 are arranged in the annular pipe 202. When in use, the high-temperature exhaust gas discharged from the calcium carbide furnace is passed from the air intake pipe 201 into the annular pipe 202, and then the gas is dispersed into the box body 1 through the plurality of air outlet nozzles 203.

[0026] The heat recovery mechanism 5 includes: a water tank 501, a water pump 502, a water supply pipe 503, a spiral tube 504, a return pipe 505, a steam output pipe 506 and a steam turbine generator 507. The water tank 501, the water pump 502 and the steam turbine generator 507 are all arranged on the ground. The water pump 502 is connected to the water tank 501 through a pipeline. The water pump 502 is connected to one end of the spiral tube 504 through the water supply pipe 503. The other end of the spiral tube 504 is connected to the water tank 501 through the return pipe 505. The spiral tube 504 is wound around the outside of the annular tube 202. The water tank 501 is connected to the steam turbine generator 507 through the steam output pipe 506. A plug 5011 is detachably installed on the upper portion, and water can be added to the water tank 501 by removing the plug 5011. The annular tube 202 and the spiral tube 504 are both made of copper, so that they have good thermal conductivity. When in use, the water in the water tank 501 is transported to the spiral tube 504 through the water pump 502, and the water in the spiral tube 504 is heated by the high-temperature gas in the annular tube 202. The heated water returns to the water tank 501 from the return pipe 505, and the water is circulated and heated. When the water is heated to a high temperature, the high-temperature steam generated is input from the steam output pipe 506 into the steam turbine generator 507, and the steam turbine generator 507 is driven by the high-temperature steam to generate electricity, thereby realizing heat recovery and utilization.

[0027] The blowing-off mechanism 4 includes: a main tube 401, a diversion tube 402 and a nozzle 403. The main tube 401 is fixed on the box body 1. The main tube 401 is connected to an external high-pressure gas source. A plurality of diversion tubes 402 are connected to the main tube 401. A plurality of nozzles 403 are arranged on the lower side of the diversion tube 402. When in use, the high-pressure gas source is transported from the main tube 401 and the diversion tube 402 to the nozzle 403, and the high-pressure gas is sprayed through the nozzle 403 to blow off the dust accumulated on the dust bag 801.

[0028] The bag filter for purifying gas from a calcium carbide furnace of the utility model, when in use, passes the high-temperature exhaust gas discharged from the calcium carbide furnace into the annular pipe 202 from the air inlet pipe 201, and then disperses the gas into the box body 1 through a plurality of gas outlet nozzles 203. At the same time, the water in the water storage tank 501 is transported to the spiral pipe 504 through the water pump 502, and the water flow in the spiral pipe 504 is heated by the high-temperature gas in the annular pipe 202. The heated water flow returns to the water storage tank 501 from the return pipe 505, and then circulates and heats the water. When the water is heated to The high-temperature steam generated at high temperatures is input from the steam output pipe 506 to the steam turbine generator 507, and the high-temperature steam drives the steam turbine generator 507 to generate electricity, thereby realizing heat recovery and utilization. After the gas enters the box body 1, it passes through multiple dust bags 801 upward, and the dust in the gas is filtered by the dust bags 801. The filtered gas is discharged from the exhaust pipe 3. After being used for a period of time, a high-pressure airflow is blown toward the dust bag 801 through the blowing-off mechanism 4, so that the dust accumulated on the dust bag 801 falls off.

[0029] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A bag filter for purifying calcium carbide furnace gas, characterized in that: It comprises a box body (1), an air intake mechanism (2), an exhaust pipe (3), a blow-off mechanism (4), a heat recovery mechanism (5) and a mounting frame (8); An air intake mechanism (2) extending into the interior of the box (1) is installed on the right side of the box (1), an exhaust pipe (3) is arranged on the upper left side of the box (1), a mounting frame (8) is fixed inside the box (1), a plurality of dust removal bags (801) are installed on the mounting frame (8), a blow-off mechanism (4) is installed on the box (1) above the mounting frame (8), and a heat recovery mechanism (5) connected to the air intake mechanism (2) is installed on the right side of the box (1); The heat recovery mechanism (5) comprises: A water storage tank (501), a water pump (502), a water supply pipe (503), a spiral tube (504), a return pipe (505), a steam output pipe (506) and a steam turbine generator (507); the water storage tank (501), the water pump (502) and the steam turbine generator (507) are all arranged on the ground; the water pump (502) is connected to the water storage tank (501) through a pipeline; the water pump (502) is connected to one end of the spiral tube (504) through the water supply pipe (503); the other end of the spiral tube (504) is connected to the water storage tank (501) through the return pipe (505); and the water storage tank (501) is connected to the steam turbine generator (507) through the steam output pipe (506).

2. The bag filter for purification of calcium carbide furnace gas according to claim 1 is characterized in that: An ash storage hopper (101) is provided at the lower end of the box body (1), and an end cover (7) is detachably mounted on the bottom of the ash storage hopper (101).

3. The bag filter for purification of calcium carbide furnace gas according to claim 1 is characterized in that: The air intake mechanism (2) comprises: An air inlet pipe (201), an annular pipe (202) and an air outlet nozzle (203), wherein the air inlet pipe (201) is fixed to the box body (1), the left end of the air inlet pipe (201) is connected to the annular pipe (202), and a plurality of air outlet nozzles (203) are arranged in the annular pipe (202).

4. The bag filter for purifying calcium carbide furnace gas according to claim 3 is characterized in that: The spiral tube (504) is wound around the outside of the annular tube (202), and both the annular tube (202) and the spiral tube (504) are made of copper.

5. The bag filter for purification of calcium carbide furnace gas according to claim 1 is characterized in that: The water storage tank (501) is detachably provided with a plug (5011).

6. The bag filter for purifying calcium carbide furnace gas according to claim 1, characterized in that: The blowing-off mechanism (4) comprises: A main pipe (401), a diverter pipe (402) and a nozzle (403), wherein the main pipe (401) is fixed on a box body (1), a plurality of diverter pipes (402) are connected to the main pipe (401), and a plurality of nozzles (403) are arranged on the lower side of the diverter pipe (402).

Images