阅读说明：本技术 一种高炉煤气精脱硫系统及方法 (Blast furnace gas fine desulfurization system and method ) 是由 王东 马昕 李伟 刘华利 于 2021-10-13 设计创作，主要内容包括：本发明涉及煤气脱硫技术领域,尤其涉及一种高炉煤气精脱硫系统及方法,该系统包括：催化水解系统和洗净塔,所述催化水解系统与所述洗净塔相连；所述催化水解系统,用于将高炉煤气进行催化水解处理；所述洗净塔,用于将所述催化水解后的高炉煤气进行精脱硫处理,获得脱硫后的高炉煤气,并将所述脱硫后的高炉煤气通过所述洗净塔的顶部的出气口排放出去。该系统提高对高炉煤气精脱硫的处理效率,防止高炉煤气对管道和设备的腐蚀,降低生产污染,节约成本。(The invention relates to the technical field of gas desulfurization, in particular to a blast furnace gas fine desulfurization system and a method, wherein the system comprises: the device comprises a catalytic hydrolysis system and a washing tower, wherein the catalytic hydrolysis system is connected with the washing tower; the catalytic hydrolysis system is used for carrying out catalytic hydrolysis treatment on the blast furnace gas; and the cleaning tower is used for carrying out fine desulfurization treatment on the blast furnace gas subjected to catalytic hydrolysis to obtain desulfurized blast furnace gas, and discharging the desulfurized blast furnace gas through a gas outlet at the top of the cleaning tower. The system improves the treatment efficiency of the blast furnace gas fine desulfurization, prevents the blast furnace gas from corroding pipelines and equipment, reduces the production pollution and saves the cost.)

1. A blast furnace gas fine desulfurization system is characterized by comprising: the device comprises a catalytic hydrolysis system and a washing tower, wherein the catalytic hydrolysis system is connected with the washing tower;

the catalytic hydrolysis system is used for carrying out catalytic hydrolysis treatment on the blast furnace gas;

and the cleaning tower is used for carrying out fine desulfurization treatment on the blast furnace gas subjected to catalytic hydrolysis to obtain desulfurized blast furnace gas, and discharging the desulfurized blast furnace gas through a gas outlet at the top of the cleaning tower.

2. The system of claim 1, wherein the system further comprises: a blast furnace gas residual pressure turbine power generation TRT system,

the TRT system is arranged on a pipeline connected with the catalytic hydrolysis system and the cleaning tower and is used for transmitting the blast furnace gas after catalytic hydrolysis to an air inlet at the bottom of the cleaning tower.

3. The system of claim 2, wherein the wash tower comprises: the gas distribution grid, the circulating alkali liquor water spray head and the alkali liquor spray head are arranged in the cleaning tower from bottom to top;

the gas distribution grid is used for uniformly distributing the blast furnace gas subjected to catalytic hydrolysis;

the circulating alkali liquor water spray head is used for spraying circulating alkali liquor water to perform fine desulfurization treatment on the blast furnace gas subjected to catalytic hydrolysis;

and the alkali liquor spray head is used for spraying alkali liquor water to carry out the fine desulfurization treatment on the blast furnace gas after the fine desulfurization treatment again.

4. The system of claim 3, wherein the wash tower further comprises: a demister is arranged on the upper portion of the shell,

the demister is arranged in the cleaning tower and above the alkali liquor spray head.

5. The system of claim 4, wherein the wash tower further comprises: producing a water spray head;

the production water spray head is arranged in the cleaning tower and above the demister and used for washing the demister.

6. The system of claim 5, wherein the system further comprises: a spray head of a gas pipeline is arranged on the spray head,

the gas pipeline spray head is arranged on a pipeline connecting the TRT system and the cleaning tower and used for spraying the circulating alkaline liquor water to carry out desulfurization pretreatment on the blast furnace gas subjected to catalytic hydrolysis.

7. The system of claim 6, wherein the system further comprises: a circulating alkali liquor pool and a circulating alkali liquor pump;

the water inlet of the circulating alkaline liquid pool is connected with the bottom of the washing tower and is used for collecting alkaline liquid water flowing out of the washing tower; the water outlet of the circulating alkali liquor water tank is connected with the gas pipeline spray head and the circulating alkali liquor water spray head through the circulating alkali liquor water pump;

and the circulating alkali liquor water pump is used for conveying the circulating alkali liquor water extracted from the circulating alkali liquor water tank to the gas pipeline spray head and the circulating alkali liquor water spray head.

8. The system of claim 7, wherein the system further comprises: the device comprises an alkali liquor tank, an alkali liquor pump, a soft water tank and an alkali liquor dilution pump;

the alkali liquor tank is connected with a water outlet pipe of the alkali liquor dilution pump through the alkali liquor pump and is used for storing alkali liquor;

the soft water pool is connected with a water inlet pipe of the alkali liquor dilution pump;

the outlet pipe of alkali lye dilution pump, with the alkali lye shower nozzle links to each other for through following extract the soft water in the soft water pond, make the soft water dilutes alkali lye to convey the alkali lye after will diluting the alkali lye shower nozzle.

9. The system of claim 8, wherein the system further comprises: a production water tank and a production water pump; the production water tank is connected with the production water spray head through the production water pump.

10. The blast furnace gas fine desulfurization method is characterized by comprising the following steps

After controlling the blast furnace gas to pass through the catalytic hydrolysis system, obtaining the blast furnace gas after catalytic hydrolysis;

carrying out fine desulfurization treatment on the blast furnace gas subjected to catalytic hydrolysis by a cleaning tower; wherein the washing tower is connected with the catalytic hydrolysis system;

and releasing the obtained desulfurized blast furnace gas after the fine desulfurization treatment.

Technical Field

The invention relates to the technical field of gas desulfurization, in particular to a blast furnace gas fine desulfurization system and a blast furnace gas fine desulfurization method.

Background

The ferrous metallurgy industry is an important basic industry of the heavy industry in China, and is also an industry with high pollution, high energy consumption and complex industrial structure. The blast furnace gas is a high-temperature, high-pressure, inflammable and explosive toxic gas, has high sulfide content, is mixed with a small amount of chloride and the like, causes serious corrosion problems to blast furnace gas pipelines and equipment, does not meet the ultralow emission standard of the national iron and steel industry, and causes great harm to the environment. At present, the blast furnace gas fine desulfurization system causes the problem of low treatment efficiency of the blast furnace gas fine desulfurization, and the effect of removing sulfides in the blast furnace gas is poor.

Disclosure of Invention

The embodiment of the application provides a blast furnace gas fine desulfurization system and a blast furnace gas fine desulfurization method, so that the technical problem of low treatment efficiency of blast furnace gas fine desulfurization in the prior art is solved, the treatment efficiency of the blast furnace gas fine desulfurization is improved, corrosion of the blast furnace gas to pipelines and equipment is prevented, production pollution is reduced, and the cost is saved.

In a first aspect, an embodiment of the present invention provides a blast furnace gas fine desulfurization system, including: the device comprises a catalytic hydrolysis system and a washing tower, wherein the catalytic hydrolysis system is connected with the washing tower;

the catalytic hydrolysis system is used for carrying out catalytic hydrolysis treatment on the blast furnace gas;

and the cleaning tower is used for carrying out fine desulfurization treatment on the blast furnace gas subjected to catalytic hydrolysis to obtain desulfurized blast furnace gas, and discharging the desulfurized blast furnace gas through a gas outlet at the top of the cleaning tower.

Preferably, the system further comprises: a blast furnace gas residual pressure turbine power generation TRT system,

the TRT system is arranged on a pipeline connected with the catalytic hydrolysis system and the cleaning tower and is used for transmitting the blast furnace gas after catalytic hydrolysis to an air inlet at the bottom of the cleaning tower.

Preferably, the washing tower includes: the gas distribution grid, the circulating alkali liquor water spray head and the alkali liquor spray head are arranged in the cleaning tower from bottom to top;

the gas distribution grid is used for uniformly distributing the blast furnace gas subjected to catalytic hydrolysis;

the circulating alkali liquor water spray head is used for spraying circulating alkali liquor water to perform fine desulfurization treatment on the blast furnace gas subjected to catalytic hydrolysis;

and the alkali liquor spray head is used for spraying alkali liquor water to carry out the fine desulfurization treatment on the blast furnace gas after the fine desulfurization treatment again.

Preferably, the washing tower further comprises: a demister is arranged on the upper portion of the shell,

the demister is arranged in the cleaning tower and above the alkali liquor spray head.

Preferably, the washing tower further comprises: producing a water spray head;

the production water spray head is arranged in the cleaning tower and above the demister and used for washing the demister.

Preferably, the system further comprises: a spray head of a gas pipeline is arranged on the spray head,

the gas pipeline spray head is arranged on a pipeline connecting the TRT system and the cleaning tower and used for spraying the circulating alkaline liquor water to carry out desulfurization pretreatment on the blast furnace gas subjected to catalytic hydrolysis.

Preferably, the system further comprises: a circulating alkali liquor pool and a circulating alkali liquor pump;

the water inlet of the circulating alkaline liquid pool is connected with the bottom of the washing tower and is used for collecting alkaline liquid water flowing out of the washing tower; the water outlet of the circulating alkali liquor water tank is connected with the gas pipeline spray head and the circulating alkali liquor water spray head through the circulating alkali liquor water pump;

and the circulating alkali liquor water pump is used for conveying the circulating alkali liquor water extracted from the circulating alkali liquor water tank to the gas pipeline spray head and the circulating alkali liquor water spray head.

Preferably, the system further comprises: the device comprises an alkali liquor tank, an alkali liquor pump, a soft water tank and an alkali liquor dilution pump;

the alkali liquor tank is connected with a water outlet pipe of the alkali liquor dilution pump through the alkali liquor pump and is used for storing alkali liquor;

the soft water pool is connected with a water inlet pipe of the alkali liquor dilution pump;

the outlet pipe of alkali lye dilution pump, with the alkali lye shower nozzle links to each other for through following extract the soft water in the soft water pond, make the soft water dilutes alkali lye to convey the alkali lye after will diluting the alkali lye shower nozzle.

Preferably, the system further comprises: a production water tank and a production water pump; the production water tank is connected with the production water spray head through the production water pump.

Based on the same inventive concept, in a second aspect, the invention also provides a blast furnace gas fine desulfurization method, which comprises the following steps:

after controlling the blast furnace gas to pass through the catalytic hydrolysis system, obtaining the blast furnace gas after catalytic hydrolysis;

carrying out fine desulfurization treatment on the blast furnace gas subjected to catalytic hydrolysis by a cleaning tower; wherein the washing tower is connected with the catalytic hydrolysis system;

and releasing the obtained desulfurized blast furnace gas after the fine desulfurization treatment.

One or more technical solutions in the embodiments of the present invention have at least the following technical effects or advantages:

in the embodiment of the present application, the blast furnace gas is subjected to catalytic hydrolysis by the catalytic hydrolysis system to generate the blast furnace gas after catalytic hydrolysis, and then the blast furnace gas after catalytic hydrolysis is conveyed into the cleaning tower. And (3) carrying out fine desulfurization treatment on the blast furnace gas subjected to catalytic hydrolysis by using a cleaning tower to obtain desulfurized blast furnace gas, and discharging the desulfurized blast furnace gas through a gas outlet at the top of the cleaning tower. By the system, the treatment efficiency of the blast furnace gas fine desulfurization is improved, the blast furnace gas which does not pass through the fine desulfurization is prevented from corroding pipelines and equipment, the production pollution is reduced, and the cost is saved.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

fig. 1 shows a schematic configuration diagram of a blast furnace gas fine desulfurization system in an embodiment of the invention;

fig. 2 shows a schematic flow chart of the steps of the blast furnace gas fine desulfurization method in the embodiment of the invention.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

Example one

The first embodiment of the present invention provides a blast furnace gas fine desulfurization system, as shown in fig. 1, including: the system comprises a catalytic hydrolysis system 101 and a washing tower 102, wherein the catalytic hydrolysis system 101 is connected with the washing tower 102;

a catalytic hydrolysis system 101 for performing catalytic hydrolysis treatment on the blast furnace gas;

the cleaning tower 102 is configured to perform a fine desulfurization treatment on the blast furnace gas after the catalytic hydrolysis to obtain a desulfurized blast furnace gas, and discharge the desulfurized blast furnace gas through a gas outlet at the top of the cleaning tower 102.

In addition, the blast furnace gas after catalytic hydrolysis is generated by the catalytic hydrolysis in the catalytic hydrolysis system 101, and the cost thereof is about 90% of the hydrogen sulfide and the remaining blast furnace gas.

In this embodiment, the blast furnace gas is subjected to catalytic hydrolysis by the catalytic hydrolysis system 101 to generate a catalytically hydrolyzed blast furnace gas, and the catalytically hydrolyzed blast furnace gas is sent to the cleaning tower 102. The blast furnace gas after catalytic hydrolysis is subjected to fine desulfurization treatment by the washing tower 102 to obtain desulfurized blast furnace gas, and the desulfurized blast furnace gas is discharged through the gas outlet at the top of the washing tower 102. By the system, the treatment efficiency of the blast furnace gas fine desulfurization is improved, the blast furnace gas which does not pass through the fine desulfurization is prevented from corroding pipelines and equipment, the production pollution is reduced, and the cost is saved.

The system further comprises: blast Furnace Gas Top pressure Turbine power generation TRT system (Blast Furnace Top Gas Recovery Turbine Unit) 103. And a TRT system 103, which is disposed on a pipeline connecting the catalytic hydrolysis system 101 and the washing tower 102, and is configured to transfer the blast furnace gas after catalytic hydrolysis to an inlet at the bottom of the washing tower 102.

The TRT system 103 not only provides a driving force for transmission of the blast furnace gas after catalytic hydrolysis, but also converts pressure energy and heat energy of the blast furnace gas into electric energy, and embodies the advantages of environmental protection, low energy consumption and low cost.

The system further comprises: a gas line head 104. And the gas pipeline spray head 104 is arranged on a pipeline connected with the TRT system 103 and the cleaning tower 102 and is used for carrying out desulfurization pretreatment on the blast furnace gas subjected to catalytic hydrolysis by spraying circulating alkaline liquor water.

The gas pipeline nozzle 104 is arranged to pre-react the blast furnace gas after catalytic hydrolysis to primarily remove a part of sulfides, and then the blast furnace gas after catalytic hydrolysis enters the cleaning tower 102 to be subjected to a fine desulfurization treatment process.

The blast furnace gas after catalytic hydrolysis gradually rises after entering from the gas inlet at the bottom of the cleaning tower 102. In the process of rising, the gas reacts with substances sprayed by related equipment arranged in the washing tower 102 from bottom to top, so that the effect of fine desulfurization of the blast furnace gas is achieved.

It should be further noted that the blast furnace gas fine desulfurization system further includes: a nitrogen plant 114. The nitrogen equipment 114 is connected with the pipeline connecting the TRT system 103 and the washing tower 102, and is also connected with the water outlet pipe of the lye dilution pump. Here, the nitrogen facility 114 is connected to a pipe connecting the TRT system 103 and the washing tower 102, and the nitrogen facility 114 is configured to supply nitrogen gas to a pipe connecting the catalytic hydrolysis system 101 and the washing tower 102, to increase a reaction area between the blast furnace gas after catalytic hydrolysis and the circulating alkaline solution water, and to sufficiently react the blast furnace gas after catalytic hydrolysis and the circulating alkaline solution water sprayed through the gas pipe nozzle 104.

The following describes the associated equipment within the scrub tower 102:

the washing tower 102 of the present embodiment includes: an air distribution grid 1021, a circulating alkaline solution water spray nozzle 1022, an alkaline solution spray nozzle 1023, a demister 1024 and a production water spray nozzle 1025 which are arranged in the washing tower 102 from bottom to top in sequence.

And a gas distribution grid 1021 for uniformly distributing the blast furnace gas after catalytic hydrolysis that enters from the gas inlet at the bottom of the cleaning tower 102. The gas distribution grid 1021 is arranged to uniformly distribute the blast furnace gas, increase the reaction area of the blast furnace gas, and ensure that the blast furnace gas can be subjected to sufficient fine desulfurization treatment.

And the circulating alkaline solution water spray head 1022 is used for spraying circulating alkaline solution water to perform fine desulfurization treatment on the blast furnace gas subjected to catalytic hydrolysis. The circulating alkaline liquid water sprayed by the circulating alkaline liquid water spray nozzle 1022 performs a fine desulfurization reaction on the blast furnace gas after the catalytic hydrolysis, so that most of sulfides in the blast furnace gas after the catalytic hydrolysis can be removed. And the circulating alkaline liquor water is the circulating alkaline liquor water, and the circulating alkaline liquor water which is used for multiple times is adopted, so that the cost is saved, the energy consumption is reduced, the treatment efficiency of the fine desulfurization of the blast furnace gas can be improved with the blast furnace gas after the catalytic hydrolysis, and the production pollution is reduced.

And the alkali liquor spray head 1023 is used for spraying alkali liquor water to perform fine desulfurization treatment on the blast furnace gas after the fine desulfurization treatment again. The alkaline solution water sprayed by the alkaline solution spray nozzle 1023 is fresh alkaline solution water, and the blast furnace gas after catalytic hydrolysis is subjected to the fine desulfurization reaction again, so that the final sulfide in the blast furnace gas after catalytic hydrolysis can be removed, the effect of fine desulfurization of the blast furnace gas is ensured, and the treatment efficiency of the fine desulfurization of the blast furnace gas is improved. In addition, the used fresh lye water can become the circulating lye water, so that the cost and the energy consumption are saved.

A demister 1024 disposed in the washing tower 102 above the lye nozzle 1023 for removing mist in the washing tower 102. After the blast furnace gas after catalytic hydrolysis is subjected to fine desulfurization treatment, fog particles are produced. In order to prevent the fog particles from being discharged along with the desulfurized blast furnace gas, a demister 1024 is needed to achieve a demisting effect and ensure the cleanliness of the desulfurized blast furnace gas.

A production water spray head 1025 provided in the washing tower 102 above the demister 1024 for washing the demister 1024 by spraying production water. Production water spray 1025's setting is for clear defroster 1024, prevents that defroster 1024 from being plugged up, the effect of guarantee defroster 1024 defogging.

Various associated equipment within the wash tower 102 are described, and in turn, the equipment connected to the associated equipment within the wash tower 102 will be described.

The system of this embodiment further comprises: a circulating lye water tank 105 and a circulating lye water pump 106; a water inlet of the circulating lye tank 105, connected to the bottom of the washing tower 102, for collecting lye water flowing out of the washing tower 102; the water outlet of the circulating lye water tank 105 is connected with the gas pipeline spray head 104 and the circulating lye water spray head 1022 through the circulating lye water pump 106. The circulating lye water tank 105 collects circulating lye water in the fine desulfurization treatment and fresh lye water in the secondary fine desulfurization treatment, and the liquid in the circulating lye water tank 105 is collectively called circulating lye water.

And the circulating alkali liquor water pump 106 is arranged on a pipeline connected with the gas pipeline spray head 104 of the circulating alkali liquor water tank 105 and is used for conveying the circulating alkali liquor water extracted from the circulating alkali liquor water tank 105 to the gas pipeline spray head 104 and the circulating alkali liquor water spray head 1022.

The system of this embodiment further comprises: an alkali liquor tank 107, an alkali liquor pump 108, a soft water tank 109 and an alkali liquor dilution pump 110;

and the lye tank 107 is used for storing lye with high concentration. The lye tank 107 is connected with the water outlet pipe of the lye dilution pump 110 through the lye pump 108, which means that the lye pump 108 is used for pumping high-concentration lye from the lye tank 107 to the water outlet pipe of the lye dilution pump 110.

And the soft water tank 109 is used for storing soft water. The soft water pool 109 is connected with the water inlet pipe of the lye dilution pump 110.

The water outlet pipe of the alkali liquor dilution pump 110 is connected with the alkali liquor spray head 1023 and is used for extracting soft water from the soft water tank 109 through the alkali liquor dilution pump 110, so that the soft water dilutes high-concentration alkali liquor and transmits the diluted alkali liquor to the alkali liquor spray head 1023.

It should be further noted that the nitrogen device 114 is further connected to the water outlet pipe of the lye dilution pump 110, and is used for adding part of nitrogen into the diluted lye, so that the water mist sprayed from the lye nozzle 1023 is more uniform and fine, which is beneficial to removing reaction.

The system of this embodiment further comprises: a production water tank 111 and a production water pump 112; the production water tank 111 is connected to a production water spray head 1025 through a production water pump 112.

The system of this embodiment further comprises: a waste water tank 113, the waste water tank 113 being connected to the bottom of the washing tower 102 for collecting waste water discharged from the washing tower 102, the waste water including used alkaline solution water and the like.

One or more technical solutions in the embodiments of the present invention have at least the following technical effects or advantages:

in this embodiment, the blast furnace gas is subjected to catalytic hydrolysis by the catalytic hydrolysis system to generate a catalytically hydrolyzed blast furnace gas, and the catalytically hydrolyzed blast furnace gas is then transferred to the cleaning tower. And (3) carrying out fine desulfurization treatment on the blast furnace gas subjected to catalytic hydrolysis by using a cleaning tower to obtain desulfurized blast furnace gas, and discharging the desulfurized blast furnace gas through a gas outlet at the top of the cleaning tower. By the system, the treatment efficiency of the blast furnace gas fine desulfurization is improved, the blast furnace gas which does not pass through the fine desulfurization is prevented from corroding pipelines and equipment, the production pollution is reduced, and the cost is saved.

Example two

Based on the same inventive concept, the second embodiment of the present invention also provides a blast furnace gas fine desulfurization method, as shown in fig. 2, including:

s201, after the blast furnace gas passes through the catalytic hydrolysis system 101, obtaining the blast furnace gas after catalytic hydrolysis;

s202, performing fine desulfurization treatment on the blast furnace gas subjected to catalytic hydrolysis through the cleaning tower 102; wherein, the washing tower 102 is connected with the catalytic hydrolysis system 101;

and S203, releasing the obtained desulfurized blast furnace gas after the fine desulfurization treatment.

As an alternative embodiment, after obtaining the blast furnace gas after catalytic hydrolysis, the method further comprises:

transmitting the blast furnace gas after catalytic hydrolysis to an air inlet at the bottom of the washing tower 102 through a TRT system 103; wherein the TRT system 103 is disposed on a pipe connecting the catalytic hydrolysis system 101 and the washing tower 102.

As an alternative embodiment, the fine desulfurization treatment of the blast furnace gas after catalytic hydrolysis includes:

uniformly distributing the blast furnace gas after the catalytic hydrolysis through a gas distribution grid 1021; spraying circulating alkaline liquor water through a circulating alkaline liquor water spray head 1022, and performing fine desulfurization treatment on the blast furnace gas subjected to catalytic hydrolysis; then, spraying alkaline solution water through an alkaline solution spray head 1023, and carrying out fine desulfurization treatment on the blast furnace gas after the fine desulfurization treatment again; wherein the wash tower 102 comprises: an air distribution grid 1021, a circulating lye water spray nozzle 1022 and a lye spray nozzle 1023 are arranged in the washing tower 102 from bottom to top.

As an alternative embodiment, the fine desulfurization treatment of the blast furnace gas after catalytic hydrolysis includes:

removing mist in the washing tower 102 by a mist eliminator 1024; wherein, the demister 1024 is disposed in the washing tower 102 above the lye nozzle 1023.

As an alternative embodiment, the fine desulfurization treatment of the blast furnace gas after catalytic hydrolysis includes:

flushing the demister 1024 through a production water spray 1025; wherein the production water spray 1025 is disposed within the wash tower 102 above the mist eliminator 1024.

As an alternative embodiment, the gas inlet for conveying the blast furnace gas after catalytic hydrolysis to the bottom of the washing tower 102 includes:

spraying the circulating alkaline solution water through a gas pipeline spray head 104, and performing desulfurization pretreatment on the blast furnace gas subjected to catalytic hydrolysis; wherein, the gas pipeline nozzle 104 is arranged on a pipeline connecting the TRT system 103 and the washing tower 102.

As an alternative embodiment, the fine desulfurization treatment of the blast furnace gas after catalytic hydrolysis includes:

collecting lye water flowing out of the wash tower 102 by means of a circulating lye water tank 105; wherein, the water inlet of the circulating alkaline liquid water tank 105 is connected with the bottom of the washing tower 102;

circulating alkaline water pumped from the circulating alkaline water tank 105 through a circulating alkaline water pump 106 and conveying the circulating alkaline water to the gas pipeline spray head 104 and the circulating alkaline water spray head 1022; the water outlet of the circulating lye water tank 105 is connected with the gas pipeline spray head 104 and the circulating lye water spray head 1022 through the circulating lye water pump 106.

As an alternative embodiment, the fine desulfurization treatment of the blast furnace gas after catalytic hydrolysis includes:

when soft water in the soft water pool 109 is pumped by the alkali liquor dilution pump 110, alkali liquor stored in the alkali liquor tank 107 is pumped by the alkali liquor pump 108;

after controlling the soft water to dilute the lye, delivering the diluted lye to the lye nozzle 1023; the lye tank 107 is connected with a water outlet pipe of the lye dilution pump 110 through the lye pump 108, and the soft water pool 109 is connected with a water inlet pipe of the lye dilution pump 110; the water outlet pipe of the lye dilution pump 110 is connected with the lye spray head 1023.

As an alternative embodiment, the fine desulfurization treatment of the blast furnace gas after catalytic hydrolysis includes:

conveying the production water pumped from the production water tank 111 to the production water spray head 1025 by the production water pump 112; wherein, the production water tank 111 is connected with the production water spray head 1025 through the production water pump 112.

Since the blast furnace gas fine desulfurization method described in this embodiment is a method for implementing the blast furnace gas fine desulfurization system in the first embodiment of the present application, based on the blast furnace gas fine desulfurization system described in the first embodiment of the present application, a person skilled in the art can understand the specific implementation of the blast furnace gas fine desulfurization method of this embodiment and various modifications thereof, and therefore, a detailed description of how to implement the blast furnace gas fine desulfurization method in the first embodiment of the present application is not given here. It is within the scope of the present application to include methods for implementing the blast furnace gas fine desulfurization system of the first embodiment of the present application.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.