Low-energy-consumption blast furnace gas fine desulfurization system

Abstract

The utility model relates to a low-energy-consumption fine desulfurization system for blast furnace gas. The low-energy-consumption fine desulfurization system comprises a dust remover, a pretreatment catalytic conversion assembly, a pressure reduction assembly and a dry adsorption desulfurization assembly, a gas outlet of the iron-making blast furnace is connected with a gas inlet of the dust remover through a pipeline, a gas outlet of the dust remover is connected with gas inlets of one or more pretreatment catalytic conversion assemblies through pipelines, and gas outlets of all the pretreatment catalytic conversion assemblies are connected with a gas inlet of the pressure reduction assembly through pipelines. A gas outlet of the pressure reduction assembly is connected with gas inlets of one or more dry adsorption desulfurization assemblies through pipelines, and gas outlets of the dry adsorption desulfurization assemblies are connected with a blast furnace gas user. The blast furnace gas fine desulfurization system disclosed by the utility model has the advantages of simple system structure, low energy consumption, no water consumption, no steam consumption and no generation of secondary pollution sources such as waste water, waste gas and the like.

Description

Technical Field

[0001] The utility model relates to a blast furnace gas fine desulfurization system, and specifically discloses a low-energy consumption blast furnace gas fine desulfurization system. Background Art

[0002] At present, the existing blast furnace gas fine desulfurization systems are mostly arranged after the blast furnace gas generator set. When such systems achieve the expected effect, they consume high electricity, large water and steam, occupy a large area, have a complex system and produce secondary pollution. Summary of the invention

[0003] The utility model aims to overcome the deficiencies in the prior art and to provide a blast furnace gas fine desulfurization system which has a simple system structure, low energy consumption, no water consumption, no steam consumption, and no generation of secondary pollution such as waste water and waste gas.

[0004] According to the technical solution provided by the utility model, the low-energy consumption blast furnace gas fine desulfurization system includes a dust collector, a pretreatment catalytic conversion component, a decompression component and a dry adsorption desulfurization component;

[0005] The air outlet of the iron-making blast furnace is connected to the air inlet of the dust collector through a pipeline, the air outlet of the dust collector is connected to the air inlet of one or more pretreatment catalytic conversion components through a pipeline, the air outlets of all pretreatment catalytic conversion components are connected to the air inlet of the pressure reducing component through a pipeline, the air outlet of the pressure reducing component is connected to the air inlet of one or more dry adsorption desulfurization components through a pipeline, and the air outlet of the dry adsorption desulfurization component is connected to the blast furnace gas user.

[0006] Preferably, the pre-treatment catalytic conversion assembly includes a primary flow regulating device, a primary flow measuring device, a primary gas distribution and pressure equalizing device and a pre-treatment catalytic conversion device;

[0007] The air outlet of the primary flow regulating device is connected to the air inlet of the primary gas distribution and pressure equalizing device through a pipeline. A primary flow measuring device is installed on the pipeline between the air outlet of the primary flow regulating device and the air inlet of the primary gas distribution and pressure equalizing device. The air outlet of the primary gas distribution and pressure equalizing device is connected to the air inlet of the pretreatment catalytic converter through a pipeline.

[0008] Preferably, the pressure reducing assembly is a pressure reducing valve group, a blast furnace gas waste pressure turbine power generation device, or a pressure reducing valve group and a blast furnace gas waste pressure turbine power generation device connected in parallel.

[0009] Preferably, the dry adsorption desulfurization component includes a secondary flow regulating device, a secondary flow measuring device, a humidity measuring device, a temperature regulating device, a secondary gas distribution, a pressure equalizing device and a dry adsorption desulfurization device;

[0010] The air outlet of the secondary flow regulating device is connected to the air inlet of the temperature regulating device through a pipeline. A secondary flow measuring device and a humidity measuring device are installed on the pipeline between the air outlet of the secondary flow regulating device and the air inlet of the temperature regulating device. The humidity measuring device is located behind the secondary flow measuring device. The air outlet of the temperature regulating device is connected to the air inlet of the secondary gas uniform distribution and pressure equalizing device through a pipeline. The air outlet of the secondary gas uniform distribution and pressure equalizing device is connected to the air inlet of the dry adsorption desulfurization device through a pipeline.

[0011] Preferably, the dust collector is a bag dust collector or a wet dust collector.

[0012] The blast furnace gas fine desulfurization system of the utility model has the advantages of simple system structure, low energy consumption, no water consumption and no steam consumption, and has the advantage of not generating secondary pollution sources such as waste water and waste gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a system structure diagram of Example 1 in the utility model. DETAILED DESCRIPTION

[0014] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0015] Example 1

[0016] A low energy consumption blast furnace gas fine desulfurization system, such as Figure 1 As shown, it includes a dust collector 1, a pre-treatment catalytic conversion component 2, a pressure reduction component 3 and a dry adsorption desulfurization component 4;

[0017] The gas outlet of the iron-making blast furnace 5 is connected to the gas inlet of the dust collector 1 through a pipeline, the gas outlet of the dust collector 1 is connected to the gas inlet of one or more pretreatment catalytic conversion components 2 through a pipeline, the gas outlets of all pretreatment catalytic conversion components 2 are connected to the gas inlet of the pressure reducing component 3 through a pipeline, the gas outlet of the pressure reducing component 3 is connected to the gas inlet of one or more dry adsorption desulfurization components 4 through a pipeline, and the gas outlet of the dry adsorption desulfurization component 4 is connected to the blast furnace gas user 6.

[0018] The pre-treatment catalytic converter assembly 2 includes a primary flow regulating device 2.1, a primary flow measuring device 2.2, a primary gas distribution and pressure equalizing device 2.3 and a pre-treatment catalytic converter device 2.4;

[0019] The air outlet of the primary flow regulating device 2.1 is connected to the air inlet of the primary gas distribution and pressure equalizing device 2.3 through a pipeline, and a primary flow measuring device 2.2 is installed on the pipeline between the air outlet of the primary flow regulating device 2.1 and the air inlet of the primary gas distribution and pressure equalizing device 2.3, and the air outlet of the primary gas distribution and pressure equalizing device 2.3 is connected to the air inlet of the pretreatment catalytic converter 2.4 through a pipeline.

[0020] The pressure reducing assembly 3 is a pressure reducing valve group 3.1 and a blast furnace gas residual pressure turbine power generation device 3.2 connected in parallel.

[0021] The dry adsorption desulfurization component 4 includes a secondary flow regulating device 4.1, a secondary flow measuring device 4.2, a humidity measuring device 4.3, a temperature regulating device 4.4, a secondary gas distribution and pressure equalizing device 4.5 and a dry adsorption desulfurization device 4.6;

[0022] The air outlet of the secondary flow regulating device 4.1 is connected to the air inlet of the temperature regulating device 4.4 through a pipeline, and a secondary flow measuring device 4.2 and a humidity measuring device 4.3 are installed on the pipeline between the air outlet of the secondary flow regulating device 4.1 and the air inlet of the temperature regulating device 4.4. The humidity measuring device 4.3 is located behind the secondary flow measuring device 4.2. The air outlet of the temperature regulating device 4.4 is connected to the air inlet of the secondary gas uniform distribution and pressure equalizing device 4.5 through a pipeline, and the air outlet of the secondary gas uniform distribution and pressure equalizing device 4.5 is connected to the air inlet of the dry adsorption desulfurization device 4.6 through a pipeline.

[0023] The dust collector 1 is a bag dust collector.

[0024] Example 1 During operation, the blast furnace gas generated by the ironmaking blast furnace 5 is connected to the dust collector 1 for dust removal. The blast furnace gas after dust removal enters the primary flow regulating device 2.1 in each pretreatment catalytic conversion component 2 for flow regulation. The flow regulation result is measured and displayed by the primary flow measuring device 2.2 to ensure that the gas volume entering the primary gas uniform distribution and pressure equalizing device 2.3 in each pretreatment catalytic conversion component 2 is the same. The blast furnace gas is evenly arranged in the pretreatment catalytic conversion device 2.4 through the primary gas uniform distribution and pressure equalizing device 2.3, so that the gas flow entering the pretreatment catalytic conversion device 2.4 in each pretreatment catalytic conversion component 2 is consistent. The blast furnace gas volume enters the pretreatment catalytic conversion device 2.4, removes harmful impurities in the blast furnace gas, and removes organic sulfur (COS, CS 2 ) is converted into inorganic sulfur (H 2 S).

[0025] The blast furnace gas after the pre-treatment catalytic conversion component 2 enters the pressure reducing component 3 composed of the pressure reducing valve group 3.1 and the blast furnace gas residual pressure turbine power generation device 3.2 connected in parallel for pressure reduction and cooling. The blast furnace gas after pressure reduction and cooling enters the secondary flow regulating device 4.1 in each dry adsorption desulfurization component 4 for flow regulation to ensure that the amount of blast furnace gas entering the temperature regulating device 4.4 in each dry adsorption desulfurization component 4 is the same. The flow regulation result is measured and displayed by the secondary flow measuring device 4.2, and the humidity measuring device 4. 3. The humidity of the blast furnace gas after flow adjustment is measured and displayed. The blast furnace gas is adjusted to a suitable temperature in the temperature adjustment device 4.4. The blast furnace gas after temperature adjustment enters the secondary gas distribution and pressure equalization device 4.5. The blast furnace gas is evenly arranged in the dry adsorption desulfurization device 4.6 through the secondary gas distribution and pressure equalization device 4.5. The blast furnace gas is dry-desulfurized by the dry adsorption desulfurization device 4.6. The blast furnace gas after dry desulfurization is connected to the blast furnace gas user 6, so that the blast furnace gas user 6 can directly use the blast furnace gas without desulfurization.

[0026] When the low-energy consumption blast furnace gas fine desulfurization system of Example 1 is in operation, no water or steam is consumed during the entire process, and no secondary pollution sources such as waste water and waste gas are generated.

[0027] The dust collector 1 in the present invention can also be a wet dust collector.

[0028] The pressure reducing assembly 3 in the present invention may adopt a separate pressure reducing valve group 3.1, or may adopt a separate blast furnace gas residual pressure turbine power generation device 3.2.

[0029] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to examples, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A low energy consumption blast furnace gas fine desulfurization system, characterized by: It comprises a dust collector (1), a pre-treatment catalytic conversion component (2), a pressure reducing component (3) and a dry adsorption desulfurization component (4); The air outlet of the ironmaking blast furnace (5) is connected to the air inlet of the dust collector (1) through a pipeline, the air outlet of the dust collector (1) is connected to the air inlet of one or more pre-treatment catalytic conversion components (2) through a pipeline, the air outlets of all pre-treatment catalytic conversion components (2) are connected to the air inlet of the pressure reducing component (3) through a pipeline, the air outlet of the pressure reducing component (3) is connected to the air inlet of one or more dry adsorption desulfurization components (4) through a pipeline, and the air outlet of the dry adsorption desulfurization component (4) is connected to the blast furnace gas user (6).

2. The low energy consumption blast furnace gas fine desulfurization system according to claim 1 is characterized in that: The pre-treatment catalytic conversion component (2) comprises a primary flow regulating device (2.1), a primary flow measuring device (2.2), a primary gas distribution and pressure equalizing device (2.3) and a pre-treatment catalytic conversion device (2.4); The gas outlet of the primary flow regulating device (2.1) is connected to the gas inlet of the primary gas distribution and pressure equalizing device (2.3) through a pipeline, a primary flow measuring device (2.2) is installed on the pipeline between the gas outlet of the primary flow regulating device (2.1) and the gas inlet of the primary gas distribution and pressure equalizing device (2.3), and the gas outlet of the primary gas distribution and pressure equalizing device (2.3) is connected to the gas inlet of the pre-treatment catalytic conversion device (2.4) through a pipeline.

3. The low energy consumption blast furnace gas fine desulfurization system according to claim 1 is characterized in that: The pressure reducing assembly (3) is a pressure reducing valve group (3.1), a blast furnace gas residual pressure turbine power generation device (3.2), or a pressure reducing valve group (3.1) and a blast furnace gas residual pressure turbine power generation device (3.2) connected in parallel.

4. The low energy consumption blast furnace gas fine desulfurization system according to claim 1 is characterized in that: The dry adsorption desulfurization component (4) comprises a secondary flow regulating device (4.1), a secondary flow measuring device (4.2), a humidity measuring device (4.3), a temperature regulating device (4.4), a secondary gas distribution and pressure equalizing device (4.5) and a dry adsorption desulfurization device (4.6); The air outlet of the secondary flow regulating device (4.1) is connected to the air inlet of the temperature regulating device (4.4) through a pipeline, and a secondary flow measuring device (4.2) and a humidity measuring device (4.3) are installed on the pipeline between the air outlet of the secondary flow regulating device (4.1) and the air inlet of the temperature regulating device (4.4), and the humidity measuring device (4.3) is located behind the secondary flow measuring device (4.2). The air outlet of the temperature regulating device (4.4) is connected to the air inlet of the secondary gas uniform distribution and pressure equalization device (4.5) through a pipeline, and the air outlet of the secondary gas uniform distribution and pressure equalization device (4.5) is connected to the air inlet of the dry adsorption desulfurization device (4.6) through a pipeline.

5. The low energy consumption blast furnace gas fine desulfurization system according to claim 1 is characterized in that: The dust collector (1) is a bag dust collector or a wet dust collector.

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