CN211394514U

CN211394514U - Blast furnace gas spraying deacidification device

Info

Publication number: CN211394514U
Application number: CN202020112528.9U
Authority: CN
Inventors: 王爱英; 王华英; 刘风明; 周立星; 王罗换
Original assignee: Hebei Yujian Energy Saving Technology Co ltd
Current assignee: Hebei Yujian Energy Saving Technology Co ltd
Priority date: 2020-01-19
Filing date: 2020-01-19
Publication date: 2020-09-01
Anticipated expiration: 2030-01-19

Abstract

The utility model discloses a blast furnace gas spraying deacidification device, including the blast furnace body, blast furnace body upper end fixed mounting has a gas pipe, a gas pipe lower extreme fixed mounting has dust collector and deacidification mechanism, the inside fixed two injection mechanisms that are equipped with of inlaying of a gas pipe, No. two gas pipes of a gas pipe right-hand member fixedly connected with, No. two gas pipes upper end right parts run through there is the dry process dust remover, No. two gas pipe upper end lower part fixed mounting has generating set, No. two gas pipe left part fixed mounting has the relief pressure valve. The utility model discloses a blast furnace gas spraying deacidification device, which sprays lime powder through a nozzle by a fan, so that the lime powder reacts with acidic substances in the gas, and the deacidification device avoids a large amount of water resource consumption and is beneficial to keeping high-temperature power generation benefit; the filter screen can realize the operation of pre-dedusting, so that the acid gas in the coal gas is fully contacted with the lime powder, thereby improving the acid removal effect.

Description

Blast furnace gas spraying deacidification device

Technical Field

The utility model relates to a blast furnace gas purifies technical field, in particular to blast furnace gas spraying deacidification device.

Background

In order to respond to the national policy requirements of energy conservation and environmental protection, in the actual production of domestic blast furnaces, the corrosion problem of blast furnace gas pipelines and accessory equipment is caused because the dry dedusting technology cannot effectively remove acid gaseous corrosive media such as chlorine, sulfur and the like. At present, more methods for spraying alkali liquor on a spray tower and removing acid by spraying alkali liquor on a pipeline are adopted in the industry, but because a large amount of alkali liquor is sprayed and water is sprayed for circular washing, a large amount of water resources are consumed, the operation and maintenance cost of the whole system is increased, the temperature of coal gas is greatly reduced, on one hand, TRT (blast furnace top temperature) generating capacity is reduced, the calorific value of the coal gas is reduced, and meanwhile, a large amount of high-salt and high-chlorine wastewater needs to be treated, so that the environmental protection advantages of water saving, energy saving and the like of dry dust removal are almost lost, in addition, the acid removal efficiency is not high in the acid removal process, and the pipeline blockage is.

SUMMERY OF THE UTILITY MODEL

The main object of the utility model is to provide a blast furnace gas spraying deacidification device, can effectively solve the problem in the background art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a blast furnace gas spraying deacidification device, includes the blast furnace body, blast furnace body upper end fixed mounting has a gas pipe, a gas pipe lower extreme fixed mounting has dust collector and deacidification mechanism, and dust collector is located deacidification mechanism left, the inside fixed two injection mechanisms that are equipped with of inlaying of a gas pipe, and two injection mechanism front ends and lower extreme respectively with dust collector upper end and deacidification mechanism upper end fixed connection, No. two gas pipes of a gas pipe right-hand member fixedly connected with, No. two gas pipe upper end right parts run through there is the dry process dust remover, No. two gas pipe upper end lower part fixed mounting has generating set, and generating set is located the dry process dust remover left, No. two gas pipe left part fixed mounting has the relief pressure valve.

Preferably, the deacidification mechanism comprises a powder inlet tank, the lower end of the powder inlet tank is fixedly connected with a connecting pipe, and the lower end of the connecting pipe is fixedly connected with a powder spraying pipeline.

Preferably, the upper part of the right end of the powder feeding tank is fixedly connected with a powder feeding pipe, the right end of the powder spraying pipeline is fixedly connected with a fan, a gas transmission carrier of the fan is high-pressure nitrogen, the upper part of the powder spraying pipeline is fixedly provided with a flange, and the upper end of the powder spraying pipeline is fixedly connected with the lower end of the spraying mechanism.

Preferably, dust collector includes installing frame and water tank, the common fixed mounting in installing frame lower extreme left side and lower extreme right side and water tank upper end left side and upper end right side has four fastening knobs, water tank front end middle part fixed mounting has the mounting panel, mounting panel upper end fixed mounting has the water pump, water pump output end fixedly connected with water pipe, water pipe upper end and injection mechanism front end fixed connection.

Preferably, the upper part of the water tank is movably clamped with a collecting box, a filter screen is fixedly arranged in the first gas pipe, the filter screen is positioned above the collecting box, and the filter screen is obliquely arranged on the inner wall of the first gas pipe.

Preferably, the injection mechanism includes the spray tube, the inboard equal fixed mounting of spray tube has a plurality of nozzles, and a plurality of nozzles all fixed inlays locates a gas pipe inner wall, the spray tube is open-ended annular structure, and nozzle fixed mounting is inside a gas pipe.

Compared with the prior art, the utility model discloses following beneficial effect has:

(1) the utility model discloses in, will get into the lime powder in the powder spraying pipeline through the fan and fluidize, and the lime powder with fluidization is through spraying the powder pipeline transportation and from the nozzle blowout in the injection mechanism, make the coal gas that spouts the lime powder along with high-speed flow diffuse rapidly, absorb moisture in the coal gas and react with the acid gas in the coal gas, thereby detach the acid material that has in the coal gas, this deacidification device and current spout alkali and water spray circulation washing mode in a large number, avoid a large amount of water resource consumption, reduce entire system's operation and maintenance cost, be favorable to keeping the high temperature power generation benefit simultaneously.

(2) In the utility model, the filter screen can adsorb and filter large particles and dust to the pre-introduced coal gas, thereby realizing the pre-dedusting operation, and the acid gas in the coal gas can be fully contacted with the lime powder while the acid removal device has the dedusting effect, thereby improving the acid removal effect of the device; in addition, the water pump can be used for washing the filtering piece, so that the filtering piece is prevented from being blocked due to excessive accumulated dust, and the subsequent gas use is prevented from being influenced.

Drawings

FIG. 1 is a schematic view of the overall structure of a blast furnace gas spray deacidification device of the present invention;

FIG. 2 is a schematic structural diagram of an acid removing mechanism of the blast furnace gas spraying acid removing device of the present invention;

FIG. 3 is a schematic structural view of a dust removing device of the blast furnace gas spray deacidification device of the present invention;

FIG. 4 is a schematic view of the dust collector of the blast furnace gas spray deacidification device of the present invention connected with a first gas pipe;

fig. 5 is a schematic structural diagram of an injection mechanism of the blast furnace gas spraying deacidification device of the present invention.

In the figure: 1. a blast furnace body; 2. a first gas pipe; 3. a dust removal device; 4. an acid removal mechanism; 5. a second gas pipe; 6. a dry dust collector; 7. a generator set; 8. a pressure reducing valve; 9. an injection mechanism; 10. a filter screen; 11. a collection box; 31. installing a frame; 32. a water tank; 33. a water pump; 34. mounting a plate; 35. fastening a knob; 36. a water pipe; 41. a powder spraying pipeline; 42. a connecting pipe; 43. a fan; 44. a powder inlet pipe; 45. feeding into a powder tank; 46. a flange member; 91. a nozzle; 92. and (4) a nozzle.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-5, a blast furnace gas spraying deacidification device comprises a blast furnace body 1, a first gas pipe 2 is fixedly installed at the upper end of the blast furnace body 1, a dust removal device 3 and a deacidification mechanism 4 are fixedly installed at the lower end of the first gas pipe 2, the dust removal device 3 is located on the left of the deacidification mechanism 4, two injection mechanisms 9 are fixedly embedded in the first gas pipe 2, the front ends and the lower ends of the two injection mechanisms 9 are respectively and fixedly connected with the upper end of the dust removal device 3 and the upper end of the deacidification mechanism 4, a second gas pipe 5 is fixedly connected with the right end of the first gas pipe 2, a dry dust remover 6 penetrates through the right of the upper end of the second gas pipe 5, a generator set 7 is fixedly installed at the lower part of the upper end of the second gas pipe 5, the generator set 7 is located on the left of the dry dust remover 6, and a pressure reducing.

In order to remove acid gas in the coal gas, the acid removing mechanism 4 comprises a powder inlet tank 45, the lower end of the powder inlet tank 45 is fixedly connected with a connecting pipe 42, the lower end of the connecting pipe 42 is fixedly connected with a powder spraying pipeline 41, and the powder spraying pipeline 41 can transport lime powder; a powder inlet pipe 44 is fixedly connected to the upper part of the right end of the powder inlet tank 45, a fan 43 is fixedly connected to the right end of the powder spraying pipeline 41, the fan 43 can fluidize powder in the pipe, so that the acid removal effect is better, a gas carrier of the fan 43 is high-pressure nitrogen, a flange 46 is fixedly installed on the upper part of the powder spraying pipeline 41, and the upper end of the powder spraying pipeline 41 is fixedly connected with the lower end of the spraying mechanism 9; in order to clean the filter screen 10 conveniently, the dust removing device 3 comprises an installation frame 31 and a water tank 32, four fastening knobs 35 are fixedly installed on the left side and the right side of the lower end of the installation frame 31 and the left side and the right side of the upper end of the water tank 32 together, the water tank 32 and the installation frame 31 can be conveniently installed and disassembled by the aid of the fastening knobs 35, an installation plate 34 is fixedly installed in the middle of the front end of the water tank 32, a water pump 33 is fixedly installed at the upper end of the installation plate 34, a water pipe 36 is fixedly connected to the output end of the water pump 33, the upper end of the water pipe 36 is fixedly connected with the front end of; a collecting box 11 is movably clamped at the upper part of the water tank 32, the collecting box 11 can collect impurity and dust in the cleaning water, a filter screen 10 is fixedly arranged in the first gas pipe 2, the filter screen 10 is positioned above the collecting box 11, and the filter screen 10 is obliquely arranged on the inner wall of the first gas pipe 2; the injection mechanism 9 comprises a spray pipe 91, a plurality of nozzles 92 are fixedly mounted on the inner side of the spray pipe 91, the plurality of nozzles 92 can enable lime powder in the nozzles 92 to be in full contact with acidic materials in gas, the acid removal effect is improved, the plurality of nozzles 92 are fixedly embedded in the inner wall of the gas pipe 2, the spray pipe 91 is of an open annular structure, and the nozzles 92 are fixedly mounted inside the gas pipe 2.

It should be noted that the utility model relates to a blast furnace gas spraying deacidification device, this device includes blast furnace, dust collector 3 and deacidification mechanism 4, at first produce coal gas through the blast furnace, and let in coal gas that has acid gas in the gas pipe 2 No. one, the coal gas that has acid gas at this moment filters through filter screen 10, and adsorb the large-scale particulate matter and dust in the coal gas and filter, thereby realize the operation of dust removal in advance, then under the effect of fan 43, the lime powder that gets into in the powder injection pipeline 41 fluidizes, and transport fluidized lime powder through the powder injection pipeline 41 and spout from the nozzle 92 in the injection mechanism 9, the lime powder that sprays in with the high-speed gas rapid diffusion that flows, absorb the moisture in the coal gas and react with acid gas in the coal gas, produce substances such as CaS, these substances are finally transported through the gas pipe 5 No. two and utilize dry process dust collector 6 to remove dust, And precipitating, and finally filtering to enter a collecting box 11 at the lower end of the dry dust collector 6, wherein the temperature loss in the coal gas is low, and the high-temperature power generation benefit after dry dust collection is kept.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a blast furnace gas spraying deacidification device, includes blast furnace body (1), its characterized in that: a first gas pipe (2) is fixedly arranged at the upper end of the blast furnace body (1), a dust removal device (3) and an acid removal mechanism (4) are fixedly arranged at the lower end of the first gas pipe (2), the dust removing device (3) is positioned at the left of the acid removing mechanism (4), two injection mechanisms (9) are fixedly embedded in the first gas pipe (2), the front ends and the lower ends of the two injection mechanisms (9) are respectively and fixedly connected with the upper end of the dust removing device (3) and the upper end of the deacidification mechanism (4), the right end of the first gas pipe (2) is fixedly connected with a second gas pipe (5), a dry dust collector (6) penetrates through the right part of the upper end of the second gas pipe (5), a generator set (7) is fixedly arranged on the lower part of the upper end of the second gas pipe (5), and the generator set (7) is positioned on the left of the dry dust collector (6), and the pressure reducing valve (8) is fixedly installed on the left part of the second gas pipe (5).

2. The blast furnace gas spray deacidification device according to claim 1, characterized in that: deacidify mechanism (4) including advancing powder jar (45), it has connecting pipe (42) to advance powder jar (45) lower extreme fixedly connected with, connecting pipe (42) lower extreme fixedly connected with spouts powder pipeline (41).

3. The blast furnace gas spray deacidification device according to claim 2, wherein: it advances powder pipe (44) to advance powder jar (45) right-hand member upper portion fixedly connected with, spout powder pipeline (41) right-hand member fixedly connected with fan (43), and fan (43) gas transmission carrier is high-pressure nitrogen gas, spout powder pipeline (41) upper portion fixed mounting have flange spare (46), and spout powder pipeline (41) upper end and injection mechanism (9) lower extreme fixed connection.

4. The blast furnace gas spray deacidification device according to claim 1, characterized in that: dust collector (3) include installing frame (31) and water tank (32), installing frame (31) lower extreme left side and lower extreme right side and water tank (32) upper end left side have four fastening knobs (35) with the common fixed mounting in upper end right side, water tank (32) front end middle part fixed mounting has mounting panel (34), mounting panel (34) upper end fixed mounting has water pump (33), water pump (33) output end fixedly connected with water pipe (36), water pipe (36) upper end and injection mechanism (9) front end fixed connection.

5. The blast furnace gas spray deacidification device according to claim 4, wherein: the movable joint in water tank (32) upper portion has collection box (11), the inside fixed mounting of a gas pipe (2) has filter screen (10), filter screen (10) are located collection box (11) top, and filter screen (10) slope is installed in a gas pipe (2) inner wall.

6. The blast furnace gas spray deacidification device according to claim 1, characterized in that: injection mechanism (9) include spray tube (91), the equal fixed mounting in spray tube (91) inboard has a plurality of nozzles (92), and a plurality of nozzles (92) are all fixed to be inlayed and are located a gas pipe (2) inner wall, spray tube (91) are open-ended annular structure, and nozzle (92) fixed mounting is inside a gas pipe (2).