CN222788831U

CN222788831U - A submerged arc furnace tail gas purification system

Info

Publication number: CN222788831U
Application number: CN202421655641.6U
Authority: CN
Inventors: 李明林; 李红星
Original assignee: Qinghai Huatie Metal Co ltd
Current assignee: Qinghai Huatie Metal Co ltd
Priority date: 2024-07-15
Filing date: 2024-07-15
Publication date: 2025-04-25
Anticipated expiration: 2034-07-15

Abstract

The utility model relates to the field of ore-heating furnaces and discloses an ore-heating furnace tail gas purification system. The utility model comprises a purification barrel, the top of which is fixedly connected with an air outlet pipe; an exhaust fan is arranged on the inner wall of the air outlet pipe; a water pump is arranged on the front bottom of the purification barrel; an input end of the water pump is fixedly connected with a water pumping pipe, the other end of the water pumping pipe is connected with the bottom of the purification barrel, the water pumping pipe is connected with the inside of the purification barrel, an output end of the water pump is fixedly connected with a water delivery pipe, the water delivery pipe extends upward along the front side of the purification barrel, a rear side wall of the water delivery pipe is fixedly connected with a plurality of branch pipes, the branch pipes penetrate the purification barrel and extend to the inside of the purification barrel, and the branch pipes are fixedly connected with the purification barrel; an outer wall of each branch pipe is fixedly connected with a plurality of spray pipes distributed in a concentric ring shape, the bottom of the spray pipe is provided with evenly distributed spray holes, and an air inlet pipe is fixedly connected with the right side wall of the purification barrel.

Description

Submerged arc furnace tail gas purification system

Technical Field

The utility model relates to a hot stove field in ore deposit specifically is a hot stove tail gas clean system in ore deposit.

Background

In the operation process of industrial equipment such as an ore-smelting furnace, the exhaust is often accompanied with a large amount of particulate matters and harmful gases, and the exhaust is directly discharged into the atmosphere, so that serious pollution is caused to the environment, and the health of people is possibly threatened.

The existing purification system usually adopts a single purification mode, such as single dry filtration or wet filtration, and the mode can not thoroughly remove all harmful components in the tail gas, so that the purification effect is poor, and some traditional purification systems can adopt more complex structures for improving the purification effect, so that the manufacturing cost of the system is increased, and the difficulty of later maintenance is also increased.

Disclosure of utility model

In order to overcome the defects, the utility model provides an ore smelting furnace tail gas purifying system.

The utility model adopts the technical scheme that:

A submerged arc furnace tail gas purification system comprises a purification barrel, wherein an air outlet pipe is fixedly communicated with the top of the purification barrel, an exhaust fan I is arranged on the inner wall of the air outlet pipe, a water pump is arranged at the bottom of the front side of the purification barrel, a water suction pipe is fixedly communicated with the input end of the water pump, the other end of the water suction pipe is connected with the bottom of the purification barrel, the water suction pipe is communicated with the inside of the purification barrel, a water delivery pipe is fixedly communicated with the output end of the water pump, the water delivery pipe extends upwards along the front side of the purification barrel, a plurality of branch pipes are fixedly communicated with the rear side wall of the water delivery pipe, penetrate through the purification barrel and extend into the inside of the purification barrel, the branch pipes are fixedly connected with the purification barrel, a plurality of spray pipes which are concentrically distributed in a ring shape are fixedly communicated with the outer wall of each branch pipe, uniformly distributed spray holes are formed in the bottom of the spray pipes, the right side wall of the purification barrel is fixedly communicated with an air inlet pipe I, the air inlet pipe I is positioned at the lower part of the spray pipe, the right side of the purification barrel is provided with a dry type filtering structure I and a dry type filtering structure II, the structures are identical to the structures of the dry type filtering structure I and the dry type filtering structure II, the dry type filtering structure I is communicated with the air inlet pipe, and the dry type filtering structure II, and the dry type filtering structure I are fixedly connected with the air inlet pipe.

The first dry type filtering structure comprises a support, the top of the support is fixedly connected with a filtering barrel, the bottom of the filtering barrel is funnel-shaped and fixedly communicated with a sewage drain pipe, a valve is arranged on the sewage drain pipe, an air inlet pipe II is fixedly communicated with the bottom of the right side wall of the filtering barrel, a dry type filtering box is inserted into the top of the filtering barrel, the upper portion of the dry type filtering box is fixedly connected with the filtering barrel through a bolt, a vent pipe is fixedly communicated with the top of the dry type filtering box, and an exhaust fan II is arranged on the inner side of the middle of the vent pipe.

The air pipe of the first dry type filtering structure is fixedly communicated with the air inlet pipe I, and the air pipe of the second dry type filtering structure is fixedly communicated with the air inlet pipe II of the first dry type filtering structure.

The upper part of the dry type filter box is opened, the bottom of the filter box is provided with a filter hole, and a filter material is placed in the dry type filter box.

The utility model has the beneficial effects that:

The utility model adopts a dry-before-wet multiple filtering mode, can more thoroughly remove particles and harmful gases in tail gas, improves the purifying effect, has a relatively simple structure, is easy to install and maintain, can conveniently discharge dust and particles accumulated in the filter barrel by arranging the blow-down pipe and the valve, keeps the continuous and efficient operation of the system, and has the advantages that the dry-type filter box adopts a detachable design, is convenient to replace and clean, ensures the filtering effect and simultaneously increases the flexibility of the system.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a top view of the present utility model;

FIG. 3 is a cross-sectional view taken at A-A of FIG. 2;

FIG. 4 is a front view of the present utility model;

FIG. 5 is a cross-sectional view taken at B-B of FIG. 4;

FIG. 6 is a cross-sectional view taken at C-C of FIG. 4.

The reference numerals in all the drawings are specifically 1, a purifying barrel, 2, an air outlet pipe, 3, a first exhaust fan, 4, a water pump, 5, a water suction pipe, 6, a water delivery pipe, 7, a branch pipe, 8, a spray pipe, 9, a spray hole, 10, a first air inlet pipe, 11, a bracket, 12, a filtering barrel, 13, a blow-off pipe, 14, a second air inlet pipe, 15, a dry filter box, 16, an air pipe, 17, a second exhaust fan, 18, a first dry filter structure, 19, a second dry filter structure, 20, a round pipe, 21 and a water supply pipe.

Detailed Description

The tail gas purification system of the submerged arc furnace comprises a purification barrel 1, wherein an air outlet pipe 2 is fixedly communicated with the top of the purification barrel 1, an exhaust fan I3 is arranged on the inner wall of the air outlet pipe 2, a water pump 4 is arranged at the bottom of the front side of the purification barrel 1, a water suction pipe 5 is fixedly communicated with the input end of the water pump 4, the other end of the water suction pipe 5 is connected with the bottom of the purification barrel 1, the water suction pipe 5 is communicated with the inside of the purification barrel 1, a water delivery pipe 6 is fixedly communicated with the output end of the water pump 4, the water delivery pipe 6 extends upwards along the front side of the purification barrel 1, a plurality of branch pipes 7 are fixedly communicated with the rear side wall of the water delivery pipe 6, the branch pipes 7 penetrate through the purification barrel 1 and extend into the purification barrel 1, the branch pipes 7 are fixedly connected with the purification barrel 1, a plurality of spray pipes 8 which are concentrically distributed, spray holes 9 which are uniformly distributed are formed in the bottom of the spray pipes 8, an air inlet pipe I10 is fixedly communicated with the right side wall of the purification barrel 1, the air inlet pipe I10 is positioned at the lower part of the spray pipes 8, a dry type purification barrel 1 is provided with a dry type filter structure I18 and a dry type filter structure II, the dry type filter structures 19 and a dry type filter structure I and a dry type filter structure 19 are communicated with a dry type filter structure I18, and a dry type filter structure II are communicated with a dry type filter structure 18.

The first dry type filtering structure 19 comprises a bracket 11, the top of the bracket 11 is fixedly connected with a filtering barrel 12, the bottom of the filtering barrel 12 is funnel-shaped and fixedly communicated with a drain pipe 13, a valve is arranged on the drain pipe 13, the bottom of the right side wall of the filtering barrel 12 is fixedly communicated with an air inlet pipe II 14, the top of the filtering barrel 12 is inserted with a dry type filtering box 15, the upper part of the dry type filtering box 15 is fixedly connected with the filtering barrel 12 through a bolt, the top of the dry type filtering box 15 is fixedly communicated with a vent pipe 16, and the middle inner side of the vent pipe 16 is provided with an exhaust fan II 17.

The vent pipe 16 of the first dry filter structure is fixedly communicated with the first air inlet pipe 10, and the vent pipe 16 of the second dry filter structure is fixedly communicated with the second air inlet pipe 14 of the first dry filter structure.

The upper part of the dry filter box 15 is opened, the bottom of the filter box 15 is provided with a filter hole, and a filter material is placed in the dry filter box 15.

The tail gas generated by the submerged arc furnace enters a purification system through an air inlet pipe II 14 of a dry type filtering structure II;

And in the first dry filtration, the tail gas enters a first dry filtration structure 18, the tail gas is subjected to preliminary filtration in a filter barrel 12 through a dry filtration box 15, larger particles and dust in the tail gas are removed, and a second exhaust fan 17 provides necessary air flow to ensure that the tail gas smoothly passes through a filter box.

And the second dry filtration, namely, the tail gas after the first filtration enters a second dry filtration structure 19 for the second dry filtration, and the second dry filtration can further remove smaller particles and impurities which are not captured in the first stage.

After two times of dry filtration, the tail gas enters the purifying barrel 1 from the air inlet pipe I10, at the moment, the water pump 4 starts to work, liquid medicine is arranged in the purifying barrel 1, the liquid medicine is conveyed to the spray pipe 8 through the water pipe 6 and the branch pipe 7, the liquid medicine is uniformly sprayed into the tail gas through the spray holes 9 at the bottom of the spray pipe 8, and the wet filtration is carried out to remove harmful gas and residual particles in the tail gas.

Exhaust gas is discharged, namely the wet-type filtered exhaust gas is discharged through an air outlet pipe 2 at the top of the purifying barrel 1, and the exhaust fan I3 ensures that the exhaust gas is smoothly discharged;

The blowdown is that a certain amount of dust and particulate matters are accumulated in the filter vat 12 after a period of operation, and at the moment, the valve of the blowdown pipe 13 can be opened to discharge the accumulated dust and particulate matters. After a period of operation, the valve of the circular tube 20 is opened, the waste liquid medicine in the purifying barrel 1 is discharged, the liquid medicine is added from the water feeding pipe 21, the upper part of the outer wall of the purifying barrel 1 is fixedly connected with the water feeding pipe 21, the water feeding pipe 21 is communicated with the inside of the purifying barrel 1, and the water feeding pipe 21 is provided with the valve. The upper part of the dry filter box 15 is fixedly connected with the filter barrel 12 through bolts, so that the dry filter box 15 and the filter barrel 12 are of a detachable structure.

The utility model protects only the mechanical part, and the functions realized by the software control part related to the mechanical part are not within the protection scope of the utility model.

Claims

1. A submerged arc furnace tail gas purification system, comprising a purification barrel (1), the top of the purification barrel (1) is fixedly connected to an air outlet pipe (2), characterized in that an exhaust fan (3) is arranged on the inner wall of the air outlet pipe (2), a water pump (4) is provided at the front bottom of the purification barrel (1), the input end of the water pump (4) is fixedly connected to a water pump (5), the other end of the water pump (5) is connected to the bottom of the purification barrel (1), the water pump (5) is connected to the inside of the purification barrel (1), the output end of the water pump (4) is fixedly connected to a water delivery pipe (6), the water delivery pipe (6) extends upward along the front side of the purification barrel (1), the rear side wall of the water delivery pipe (6) is fixedly connected to a plurality of branch pipes (7), the branch pipes (7) penetrate the purification barrel (1) and extend to the inside of the purification barrel (1), the branch pipes (7) are connected to the purification barrel (1) ) are fixedly connected; the outer wall of each branch pipe (7) is fixedly connected to a plurality of spray pipes (8) distributed in a concentric ring shape, and the bottom of the spray pipe (8) is provided with evenly distributed spray holes (9); the right side wall of the purification barrel (1) is fixedly connected to an air intake pipe (10), and the air intake pipe (10) is located at the lower part of the lowest spray pipe (8); the right side of the purification barrel (1) has a dry filter structure (18) and a dry filter structure (19); the dry filter structure (18) and the dry filter structure (19) have the same structure; the dry filter structure (18) is connected to the air intake pipe (10), and the dry filter structure (18) and the dry filter structure (19) are connected; the bottom of the outer wall of the purification barrel (1) is fixedly connected to a circular pipe (20), and the circular pipe (20) is provided with a valve.

2. A submerged arc furnace exhaust gas purification system according to claim 1, characterized in that a dry filtering structure (18) comprises a bracket (11), a filter barrel (12) is fixedly connected to the top of the bracket (11), the bottom of the filter barrel (12) is funnel-shaped and fixedly connected to a sewage pipe (13), the sewage pipe (13) is equipped with a valve, an air intake pipe (14) is fixedly connected to the bottom of the right side wall of the filter barrel (12), a dry filter box (15) is plugged into the top of the filter barrel (12), the upper part of the dry filter box (15) is fixedly connected to the filter barrel (12) by bolts, the top of the dry filter box (15) is fixedly connected to a ventilation pipe (16), and an exhaust fan (17) is installed on the inner side of the middle part of the ventilation pipe (16).

3. A blast furnace exhaust gas purification system according to claim 2, characterized in that the ventilation pipe (16) of the dry filter structure one (18) is fixedly connected to the air inlet pipe one (10), and the ventilation pipe (16) of the dry filter structure two (19) is fixedly connected to the air inlet pipe two (14) of the dry filter structure one.

4. A submerged arc furnace exhaust gas purification system according to claim 1, characterized in that the dry filter box (15) has an opening at the top, a filter hole is provided at the bottom of the filter box (15), and filter material is placed in the dry filter box (15).