Rich oxygen preparation system

Abstract

The utility model discloses an oxygen-enriched preparation system which comprises a positive pressure oxygen-enriched membrane oxygen generation module, a flue gas treatment module, a carbon-based oxygen-enriched configuration module, a carbon-based air configuration module and a cement production module, and the positive pressure oxygen-enriched membrane oxygen generation module is connected with the carbon-based oxygen-enriched configuration module; the cement production module is respectively connected with the flue gas treatment module, the carbon-based air configuration module and the carbon-based oxygen-enriched configuration module, and the flue gas treatment module is respectively connected with the carbon-based air configuration module and the carbon-based oxygen-enriched configuration module; the positive pressure oxygen-enriched membrane oxygen generation module is provided with a membrane oxygen-enriched skid-mounted device, and the carbon-based oxygen-enriched configuration module and the carbon-based air configuration module are provided with an oxygen-enriched mixing valve and an air mixing valve respectively. Oxygen-enriched gas generated by the membrane oxygen-enriched skid-mounted device and high-pressure flue gas generated by the flue gas treatment module are mixed by the oxygen-enriched mixing valve; and low-pressure flue gas generated by the flue gas treatment module and air are mixed by the air mixing valve and then are conveyed to the cement production module. The preparation efficiency of the oxygen-enriched gas is improved, and the emission of toxic and harmful gas can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of oxygen-enriched production, in particular to an oxygen-enriched production system. Background Art

[0002] The flue gas produced by cement kilns is a high-temperature, high-dust and harmful gas waste gas, which mainly comes from the production process of cement clinker. During the clinker burning process, various raw materials and fuels undergo high-temperature melting, chemical reactions and high-temperature gasification, producing a large amount of flue gas. These flue gases contain a large amount of heat energy, dust, harmful gases and greenhouse gases such as carbon dioxide, which have a serious impact on the kiln combustion efficiency and the ecological environment. Summary of the invention

[0003] Purpose of the invention: The purpose of the utility model is to provide an oxygen-enriched production system that can both improve the oxygen-enriched production efficiency and reduce the emission of toxic and harmful gases.

[0004] Technical solution: In order to achieve the above-mentioned invention purpose, the utility model is an oxygen-enriched production system, including a positive pressure oxygen-enriched membrane oxygen production module, a flue gas treatment module, a carbon-based oxygen-enriched configuration module, a carbon-based air configuration module and a cement production module.

[0005] The positive pressure oxygen-enriched membrane oxygen production module is connected to the carbon-based oxygen-enriched configuration module, the cement production module is respectively connected to the flue gas treatment module, the carbon-based air configuration module and the carbon-based oxygen-enriched configuration module, and the flue gas treatment module is respectively connected to the carbon-based air configuration module and the carbon-based oxygen-enriched configuration module;

[0006] The positive pressure oxygen-enriched membrane oxygen production module is provided with a membrane oxygen-enriched skid-mounted device, and the carbon-based oxygen-enriched configuration module and the carbon-based air configuration module are respectively provided with an oxygen-enriched mixing valve and an air mixing valve. The oxygen-enriched mixing valve mixes the oxygen-enriched gas generated by the membrane oxygen-enriched skid-mounted device and the high-pressure flue gas generated by the flue gas treatment module and transmits the mixture to the cement production module; the air mixing valve mixes the low-pressure flue gas generated by the flue gas treatment module and air and transmits the mixture to the cement production module.

[0007] Furthermore, the cement production module is a cement kiln.

[0008] Furthermore, the flue gas treatment module includes a high-pressure regulating valve and a low-pressure regulating valve. The high-pressure regulating valve regulates the flue gas generated by the cement production module to produce high-pressure flue gas, which is transmitted to the carbon-based oxygen-enriched configuration module. The low-pressure regulating valve regulates the flue gas generated by the cement production module to produce low-pressure flue gas, which is transmitted to the carbon-based air configuration module.

[0009] Furthermore, the carbon-based oxygen-enriched configuration module and the carbon-based air configuration module are respectively provided with an oxygen-enriched pressure gauge and an air pressure gauge.

[0010] Furthermore, the positive pressure oxygen-enriched membrane oxygen production module also includes a compressor and a dryer, and the dryer is connected to the compressor and the membrane oxygen-enriched skid-mounted device respectively.

[0011] Furthermore, it also includes a nitrogen-rich output module, which is connected to the positive-pressure oxygen-rich membrane oxygen production module, and the nitrogen-rich output module is provided with one or more fifth regulating valves.

[0012] Furthermore, it also includes an oxygen-enriched pretreatment module, which is provided with a filter and a dehumidifier. The filter is connected to the dehumidifier and the positive pressure oxygen-enriched membrane oxygen production module respectively, and the dehumidifier is connected to the carbon-based oxygen-enriched configuration module.

[0013] Beneficial effects: The carbon-based oxygen-enriched configuration module, cement production module, flue gas treatment module and carbon-based air configuration module of the utility model form a flue gas circulation system, which realizes the reuse of flue gas and can greatly improve the combustion efficiency in the cement production module, while reducing the generation and emission of toxic and harmful gases. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 Schematic diagram of the system structure of the embodiment. DETAILED DESCRIPTION

[0015] like Figure 1 As shown, an oxygen-enriched production system includes a positive pressure oxygen-enriched membrane oxygen production module 1, a flue gas treatment module 2, a carbon-based oxygen-enriched configuration module 3, a carbon-based air configuration module 4 and a cement production module 5. As a preferred embodiment of this embodiment, the cement production module 5 is a cement kiln.

[0016] The positive pressure oxygen-enriched membrane oxygen production module 1 is connected to the carbon-based oxygen-enriched configuration module 3 through the oxygen-enriched pretreatment module 7, the cement production module 5 is respectively connected to the flue gas treatment module 2, the carbon-based air configuration module 4 and the carbon-based oxygen-enriched configuration module 3, and the flue gas treatment module 2 is respectively connected to the carbon-based air configuration module 4 and the carbon-based oxygen-enriched configuration module 3;

[0017] The positive pressure oxygen-enriched membrane oxygen production module 1 is provided with a membrane oxygen-enriched skid-mounted device 11, and the carbon-based oxygen-enriched configuration module 3 and the carbon-based air configuration module 4 are respectively provided with an oxygen-enriched mixing valve 31 and an air mixing valve 41. The oxygen-enriched mixing valve 31 mixes the oxygen-enriched gas generated by the membrane oxygen-enriched skid-mounted device 11 and the high-pressure flue gas generated by the flue gas treatment module 2 and transmits them to the cement production module 5; the air mixing valve 41 mixes the low-pressure flue gas generated by the flue gas treatment module 2 and air and transmits them to the cement production module 5.

[0018] The flue gas treatment module 2 includes a high-pressure regulating valve 21 and a low-pressure regulating valve 22. The high-pressure regulating valve 21 regulates the flue gas generated by the cement production module 5 to generate high-pressure flue gas and transmits it to the carbon-based oxygen-enriched configuration module 3. The low-pressure regulating valve 22 regulates the flue gas generated by the cement production module 5 to generate low-pressure flue gas and transmits it to the carbon-based air configuration module 4. The carbon-based oxygen-enriched configuration module 3 and the carbon-based air configuration module 4 are respectively provided with an oxygen-enriched pressure gauge 32 and an air pressure gauge 42.

[0019] The positive pressure oxygen-enriched membrane oxygen production module 1 also includes a compressor 12 and a dryer 13, and the dryer 13 is respectively connected to the compressor 12 and the membrane oxygen-enriched skid-mounted device 11. It also includes a nitrogen-enriched output module 6, which is connected to the positive pressure oxygen-enriched membrane oxygen production module 1. The nitrogen-enriched output module 6 is provided with one or more nitrogen-enriched regulating valves 61. The oxygen-enriched pretreatment module 7 is provided with a filter 71 and a dehumidifier 72, and the filter 71 is respectively connected to the dehumidifier 72 and the positive pressure oxygen-enriched membrane oxygen production module 1, and the dehumidifier 72 is connected to the carbon-based oxygen-enriched configuration module 3.

[0020] Working principle: After the air passes through the positive pressure oxygen-enriched membrane oxygen production module 1, it is pressurized by the compressor 12 and then output to the dryer 13 for water removal. The obtained 5-15 bar compressed air is output to the membrane oxygen-enriched skid-mounted device 11 for oxygen-enriched membrane separation process. In the membrane oxygen-enriched skid-mounted device 11, the compressed air is separated into oxygen-enriched gas (pressure of 10-300 kPa, concentration of more than 30%) and nitrogen-enriched gas (pressure of 4-14 bar, concentration of more than 85%) according to the different permeation rates of the gas components in the compressed air. The nitrogen-enriched gas is output to the nitrogen-enriched output module 6, and after being adjusted by the nitrogen-enriched regulating valve 61, it can be directly connected to the compressed air pipeline or used as finished nitrogen for coal bunker protection. The finished nitrogen can effectively suppress the spontaneous combustion of coal powder, thereby reducing the risk of fire. The oxygen-enriched gas is output to the oxygen-enriched pretreatment module 7 for oxygen-enriched pretreatment. The filter 71 in the oxygen-enriched pretreatment module 7 first filters the oxygen-enriched gas, then passes through the dehumidifier 72 for dehumidification and heating treatment, and outputs it to the carbon-based oxygen-enriched configuration module 3. The oxygen-enriched mixing valve 31 in the carbon-based oxygen-enriched configuration module 3 fully mixes the high-pressure flue gas regulated by the high-pressure regulating valve 21 in the flue gas treatment module 2 with the oxygen-enriched gas, and then outputs it to the cement production module 5 after obtaining the carbon-based oxygen-enriched gas. The carbon-based air configuration module 4 fully mixes the low-pressure flue gas regulated by the low-pressure regulating valve 22 in the flue gas treatment module 2 with the air, and then outputs it to the cement production module 5 after obtaining the carbon-based air gas. The flue gas treatment module 2 is used to adjust the air pressure of the flue gas produced by the cement production module 5. The oxygen-enriched pressure gauge 32 and the air pressure gauge 42 are used to read the gas pressure values ​​output by the carbon-based oxygen-enriched configuration module 3 and the carbon-based air configuration module 4, respectively. The carbon-based oxygen-enriched configuration module 3, the cement production module 5, the flue gas treatment module 2 and the carbon-based air configuration module 4 form a flue gas circulation system, which realizes the reuse of flue gas and can greatly improve the combustion efficiency in the cement production module 5, while reducing the generation and emission of pollutants such as NOx and Sox.

[0021] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. An oxygen-enriched production system, characterized in that: It includes positive pressure oxygen-enriched membrane oxygen production module, flue gas treatment module, carbon-based oxygen-enriched configuration module, carbon-based air configuration module and cement production module. The positive pressure oxygen-enriched membrane oxygen production module is connected to the carbon-based oxygen-enriched configuration module, the cement production module is respectively connected to the flue gas treatment module, the carbon-based air configuration module and the carbon-based oxygen-enriched configuration module, and the flue gas treatment module is respectively connected to the carbon-based air configuration module and the carbon-based oxygen-enriched configuration module; The positive pressure oxygen-enriched membrane oxygen production module is provided with a membrane oxygen-enriched skid-mounted device, and the carbon-based oxygen-enriched configuration module and the carbon-based air configuration module are respectively provided with an oxygen-enriched mixing valve and an air mixing valve. The oxygen-enriched mixing valve mixes the oxygen-enriched gas generated by the membrane oxygen-enriched skid-mounted device and the high-pressure flue gas generated by the flue gas treatment module and transmits the mixture to the cement production module; the air mixing valve mixes the low-pressure flue gas generated by the flue gas treatment module and air and transmits the mixture to the cement production module.

2. The oxygen-enriched production system according to claim 1, characterized in that: The cement production module is a cement kiln.

3. The oxygen-enriched production system according to claim 1, characterized in that: The flue gas treatment module includes a high-pressure regulating valve and a low-pressure regulating valve. The high-pressure regulating valve regulates the flue gas generated by the cement production module to produce high-pressure flue gas, which is transmitted to the carbon-based oxygen-enriched configuration module. The low-pressure regulating valve regulates the flue gas generated by the cement production module to produce low-pressure flue gas, which is transmitted to the carbon-based air configuration module.

4. The oxygen-enriched production system according to claim 1, characterized in that: The carbon-based oxygen-enriched configuration module and the carbon-based air configuration module are respectively provided with an oxygen-enriched pressure gauge and an air pressure gauge.

5. The oxygen-enriched production system according to claim 1, characterized in that: The positive pressure oxygen-enriched membrane oxygen production module further comprises a compressor and a dryer, and the dryer is connected to the compressor and the membrane oxygen-enriched skid-mounted device respectively.

6. The oxygen-enriched production system according to claim 1, characterized in that: It also includes a nitrogen-rich output module, which is connected to the positive-pressure oxygen-rich membrane oxygen production module, and the nitrogen-rich output module is provided with one or more fifth regulating valves.

7. The oxygen-enriched production system according to claim 1, characterized in that: It also includes an oxygen-enriched pretreatment module, which is provided with a filter and a dehumidifier. The filter is connected to the dehumidifier and the positive pressure oxygen-enriched membrane oxygen production module respectively, and the dehumidifier is connected to the carbon-based oxygen-enriched configuration module.

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