CN215855943U - Dry hydrogen sulfide removal equipment for blast furnace gas fine desulfurization - Google Patents

Abstract

A dry hydrogen sulfide removal device for blast furnace gas fine desulfurization belongs to the technical field of deep purification of steel blast furnace gas. The device comprises a desulfurization unit, a dry desulfurization agent, a connecting device among the desulfurization units, a system inlet pipe, an upper desulfurization unit inlet pipe, a lower desulfurization unit inlet pipe, a desulfurization unit inlet branch pipe, a desulfurization unit outlet branch pipe, an upper desulfurization unit outlet pipe, a lower desulfurization unit outlet pipe and a system outlet pipe. Has the advantages that: by adopting the process equipment, the occupied area of the dry desulfurization equipment is reduced by 75 percent under the condition of not changing the resistance drop of a system, thereby being greatly beneficial to the general layout of dry desulfurization facilities; meanwhile, the process equipment can ensure the balance of the desulfurization load among the desulfurization units.

Description

Dry hydrogen sulfide removal equipment for blast furnace gas fine desulfurization

Technical Field

The utility model belongs to the technical field of deep purification of blast furnace gas in steel plants, and particularly relates to dry hydrogen sulfide removal equipment for fine desulfurization of blast furnace gas.

Background

The technology of blast furnace gas fine desulfurization is that COS in blast furnace gas is catalyzed and hydrolyzed into H2S by a catalyst before TRT, and H2S is removed by an inorganic sulfur removal technology after TRT. The H2S adopts a dry desulphurization process, the desulphurization efficiency is high, the content of H2S in the desulfurized coal gas is far lower than the environmental protection standard, but the dry desulphurization tower has a large number, so that the system occupies a large area and is difficult to implement in the region of old plant reconstruction.

Disclosure of Invention

The utility model aims to provide dry hydrogen sulfide removal equipment for blast furnace gas fine desulfurization, which can greatly reduce the occupied area of a dry desulfurization tower and is beneficial to popularization of a blast furnace gas fine desulfurization technology.

The utility model comprises a system outlet pipe 1, a dry desulfurizing agent 2, a connecting device 3 between desulfurization units, a system inlet pipe 4, an upper desulfurization unit inlet pipe 5, a lower desulfurization unit inlet pipe 6, a desulfurization unit inlet branch pipe 7, a desulfurization unit outlet branch pipe 8, an upper desulfurization unit outlet pipe 9, a lower desulfurization unit outlet pipe 10, a No. 1 desulfurization unit 11, a No. 2 desulfurization unit 12, a No. 3 desulfurization unit 13 and a No. 4 desulfurization unit 14.

1^#No. 11, 2 desulfurization units^#No. 12, 3 desulfurization units^#No. 13, 4 desulfurization units^#The number 14 of desulfurization units are connected by the inter-desulfurization-unit connecting device 3, 1^#No. 11, 2 desulfurization units^#No. 12, 3 desulfurization units^#No. 13, 4 desulfurization units^#Desulfurization unit 14 from top to bottom connects gradually, and system inlet tube 4 is connected with upper portion desulfurization unit inlet tube 5 and lower part desulfurization unit inlet tube 6, and desulfurization unit inlet branch pipe 7 respectively with 1^#No. 11, 2 desulfurization units^#No. 12, 3 desulfurization units^#No. 13, 4 desulfurization units^#The number 14 of the desulfurization units are connected, and the outlet branch pipes 8 of the desulfurization units are respectively connected with 1^#No. 11, 2 desulfurization units^#No. 12, 3 desulfurization units^#No. 13, 4 desulfurization units^#The number of the desulfurization units 14 are connected, the outlet branch pipe 8 of the desulfurization unit is connected with the outlet pipe 9 of the upper desulfurization unit and the outlet pipe 10 of the lower desulfurization unit, and the upper desulfurization unitThe outlet pipe 9 of the sulfur unit and the outlet pipe 10 of the lower desulfurization unit are connected with the outlet pipe 1 of the system, and the dry desulfurizing agent 2 is filled in the outlet pipe 1^#No. 11, 2 desulfurization units^#No. 12, 3 desulfurization units^#No. 13, 4 desulfurization units^#Number desulfurization unit 14.

1^#No. 11, 2 desulfurization units^#No. 12, 3 desulfurization units^#No. 13, 4 desulfurization units^#The number desulfurization unit 14 adopts a fixed bed circular tower type container, and the airflow organization adopts a form of downward inlet and upward outlet; the dry desulfurizing agent 2 adopts ferric oxide or active carbon dry desulfurizing agent; the connecting device 3 between the desulfurization units adopts a cylindrical steel structure; a system inlet pipe 4, an upper desulfurization unit inlet pipe 5, a lower desulfurization unit inlet pipe 6, a desulfurization unit inlet branch pipe 7, a desulfurization unit outlet branch pipe 8, an upper desulfurization unit outlet pipe 9, a lower desulfurization unit outlet pipe 10 and a system outlet pipe 11 adopt welded steel pipes; the upper desulfurization unit inlet pipe 5 is the same size as the lower desulfurization unit inlet pipe 6, and the upper desulfurization unit outlet pipe 9 is the same size as the lower desulfurization unit outlet pipe 10.

The utility model has the advantages that: by adopting the process equipment, the occupied area of the dry-method hydrogen sulfide removal equipment is reduced by 75 percent under the condition of not changing the resistance drop of a system, thereby being greatly beneficial to the general diagram arrangement of dry-method desulfurization facilities; meanwhile, the process equipment can ensure the balance of the desulfurization load among the desulfurization units.

Drawings

FIG. 1 is a schematic diagram of the desulfurization apparatus. Including novel system outlet pipe 1, dry desulfurization agent 2, connecting device 3 between desulfurization unit, system inlet pipe 4, upper portion desulfurization unit inlet pipe 5, lower part desulfurization unit inlet pipe 6, desulfurization unit entry branch pipe 7, desulfurization unit outlet branch pipe 8, upper portion desulfurization unit outlet pipe 9, lower part desulfurization unit outlet pipe 10, No. 1 desulfurization unit 11, No. 2 desulfurization unit 12, No. 3 desulfurization unit 13, No. 4 desulfurization unit 14.

Detailed Description

Example 1

The following describes embodiments of the present invention with reference to the drawings.

The utility modelIncluding novel system outlet pipe 1, dry method desulfurizer 2, connecting device 3 between desulfurization unit, system inlet pipe 4, upper portion desulfurization unit inlet pipe 5, lower part desulfurization unit inlet pipe 6, desulfurization unit entry branch pipe 7, desulfurization unit exit branch pipe 8, upper portion desulfurization unit outlet pipe 9, lower part desulfurization unit outlet pipe 10, 1^#No. 11, 2 desulfurization units^#No. 12, 3 desulfurization units^#No. 13, 4 desulfurization units^#Number desulfurization unit 14. 1^#No. 11, 2 desulfurization units^#No. 12, 3 desulfurization units^#No. 13, 4 desulfurization units^#The number 14 of desulfurization units are connected by the inter-desulfurization-unit connecting device 3, 1^#No. 11, 2 desulfurization units^#No. 12, 3 desulfurization units^#No. 13, 4 desulfurization units^#Desulfurization unit 14 from top to bottom connects gradually, and system inlet tube 4 is connected with upper portion desulfurization unit inlet tube 5 and lower part desulfurization unit inlet tube 6, and desulfurization unit inlet branch pipe 7 respectively with 1^#No. 11, 2 desulfurization units^#No. 12, 3 desulfurization units^#No. 13, 4 desulfurization units^#The number 14 of the desulfurization units are connected, and the outlet branch pipes 8 of the desulfurization units are respectively connected with 1^#No. 11, 2 desulfurization units^#No. 12, 3 desulfurization units^#No. 13, 4 desulfurization units^#The number of the desulfurization units 14 are connected, the outlet branch pipe 8 of the desulfurization unit is connected with the outlet pipe 9 of the upper desulfurization unit and the outlet pipe 10 of the lower desulfurization unit, the outlet pipe 9 of the upper desulfurization unit and the outlet pipe 10 of the lower desulfurization unit are connected with the outlet pipe 1 of the system, and the dry desulfurizing agent 2 is filled in the system 1^#No. 11, 2 desulfurization units^#No. 12, 3 desulfurization units^#No. 13, 4 desulfurization units^#Number desulfurization unit 14. 1^#No. 11, 2 desulfurization units^#No. 12, 3 desulfurization units^#No. 13, 4 desulfurization units^#The number desulfurization unit 14 adopts a fixed bed circular tower type container, and the airflow organization adopts a form of downward inlet and upward outlet; the dry desulfurizing agent 2 adopts ferric oxide or active carbon dry desulfurizing agent; the connecting device 3 between the desulfurization units adopts a cylindrical steel structure; a system inlet pipe 4, an upper desulfurization unit inlet pipe 5, a lower desulfurization unit inlet pipe 6, a desulfurization unit inlet branch pipe 7,The outlet branch pipe 8 of the desulfurization unit, the outlet pipe 9 of the upper desulfurization unit, the outlet pipe 10 of the lower desulfurization unit and the outlet pipe 11 of the system are welded steel pipes; the upper desulfurization unit inlet pipe 5 is the same size as the lower desulfurization unit inlet pipe 6, and the upper desulfurization unit outlet pipe 9 is the same size as the lower desulfurization unit outlet pipe 10.

The working principle is as follows: blast furnace gas passes through system inlet tube 4, upwards divides into two branches downwards, and blast furnace gas gets into No. 1 desulfurization unit 11, No. 2 desulfurization unit 12, No. 3 desulfurization unit 13, No. 4 desulfurization unit 14 respectively by upper portion desulfurization unit inlet tube 5, lower part desulfurization unit inlet tube 6. The internal airflow organization of each desulfurization unit adopts a form of downward inlet and upward outlet, which is not only beneficial to the distribution of the airflow organization, ensures that the desulfurizer on the cross section can be fully contacted with blast furnace gas, but also beneficial to the discharge of condensed water in the desulfurization units, and avoids the influence of the condensed water on the desulfurization efficiency. After the blast furnace gas passes through the four desulfurization units, H2S in the gas is within 10mg/Nm3, and then the gas sequentially passes through an outlet branch pipe 8 of the desulfurization unit, an outlet pipe 9 of the upper desulfurization unit and an outlet pipe 10 of the lower desulfurization unit, is sent to an outlet pipe 1 of the system and is discharged to a plant area comprehensive pipe network. 4 desulfurization units are arranged in parallel, so that the reduction of system resistance can be ensured. The 4 desulfurization units are vertically stacked, so that the occupied area of the equipment can be reduced by 75%.

As the coal gas passes through 1^#No. 11, 2 desulfurization units^#No. 12, 3 desulfurization units^#No. 13, 4 desulfurization units^#The total distance of the pipelines of the No. 14 desulfurization units is the same, the pipe diameters are the same, and the bed height of each desulfurization unit is the same, so that the pipelines pass through 1^#No. 11, 2 desulfurization units^#No. 12, 3 desulfurization units^#No. 13, 4 desulfurization units^#The gas volumes of number desulfurization unit 14 are similar. 1^#No. 11, 2 desulfurization units^#The gas quantity of the two desulfurization units can be rebalanced between the desulfurization units 12 through the adjustment of the pipe diameters of the inlet and the outlet of the desulfurization units, 3^#No. 13, 4 desulfurization units^#Number desulfurization unit 14 is similar. By adopting the above measures, 1 can be ensured^#No. 11, 2 desulfurization units^#No. 12, 3 desulfurization units^#No. 13, 4 desulfurization units^#Horn-shaped pinThe gas quantity of the four sulfur removal units of the sulfur unit 14 is similar, and 3 can not occur^#No. 13, 4 desulfurization units^#Number 14 desulfurization unit is highly loaded, 1^#No. 11, 2 desulfurization units^#The number desulfurization unit 12 is under a small load.

Claims (2)

1. The dry hydrogen sulfide removal equipment for blast furnace gas fine desulfurization is characterized by comprising a system outlet pipe (1), a dry desulfurizing agent (2), a connecting device (3) among desulfurization units, a system inlet pipe (4), an upper desulfurization unit inlet pipe (5), a lower desulfurization unit inlet pipe (6), a desulfurization unit inlet branch pipe (7), a desulfurization unit outlet branch pipe (8), an upper desulfurization unit outlet pipe (9), a lower desulfurization unit outlet pipe (10), 1^#No. 11, 2 desulfurization unit^#No. 12, 3 desulfurization unit^#No. 13, 4 desulfurization unit^#A number desulfurization unit (14); 1^#No. 11, 2 desulfurization unit^#No. 12, 3 desulfurization unit^#No. 13, 4 desulfurization unit^#The number desulfurization units (14) are connected through a connecting device (3) between the desulfurization units, 1^#No. 11, 2 desulfurization unit^#No. 4 desulfurization unit (12), No. 3 desulfurization unit (13), No. 4 desulfurization unit (14) from top to bottom connect gradually, system inlet tube (4) are connected with upper portion desulfurization unit inlet tube (5) and lower part desulfurization unit inlet tube (6), desulfurization unit entry branch pipe (7) respectively with 1^#No. 11, 2 desulfurization unit^#No. 12, 3 desulfurization unit^#No. 13, 4 desulfurization unit^#The number of the desulfurization units (14) are connected, and outlet branch pipes (8) of the desulfurization units are respectively connected with the number 1^#No. 11, 2 desulfurization unit^#No. 12, 3 desulfurization unit^#No. 13, 4 desulfurization unit^#The desulfurization units (14) are connected, an outlet branch pipe (8) of the desulfurization unit is connected with an outlet pipe (9) of the upper desulfurization unit and an outlet pipe (10) of the lower desulfurization unit, the outlet pipe (9) of the upper desulfurization unit and the outlet pipe (10) of the lower desulfurization unit are connected with an outlet pipe (1) of the system, and a dry desulfurizing agent (2) is filled in the outlet pipe (1)^#No. 11, 2 desulfurization unit^#No. 12, 3 desulfurization unit^#No. 13, 4 desulfurization unit^#A number of desulphurization units (14).

2. The apparatus according to claim 1, characterized in that 1^#No. 11, 2 desulfurization unit^#No. 12, 3 desulfurization unit^#No. 13, 4 desulfurization unit^#The number desulfurization unit (14) adopts a fixed bed circular tower type container, and the airflow organization adopts a form of bottom inlet and top outlet; the dry desulfurizing agent (2) adopts ferric oxide or active carbon dry desulfurizing agent; the connecting device (3) between the desulfurization units adopts a cylindrical steel structure; the system comprises a system inlet pipe (4), an upper desulfurization unit inlet pipe (5), a lower desulfurization unit inlet pipe (6), a desulfurization unit inlet branch pipe (7), a desulfurization unit outlet branch pipe (8), an upper desulfurization unit outlet pipe (9), a lower desulfurization unit outlet pipe (10) and a system outlet pipe (1), which are welded steel pipes; the upper desulfurization unit inlet pipe (5) and the lower desulfurization unit inlet pipe (6) are the same in size, and the upper desulfurization unit outlet pipe (9) and the lower desulfurization unit outlet pipe (10) are the same in size.

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