Method and device for ordinary-pressure oxygen-enriched continuous gasification-gas-steam combined cycle power-generation heat supply

Abstract

The invention provides a method and a device for ordinary-pressure oxygen-enriched continuous gasification-gas-steam combined cycle power-generation heat supply. The method comprises gas preparation, gas desulfuration, and power-generation heat-supply. The device comprises a gas preparation part, a gas desulfuration part, a gas power-generation part and a gas heat supply part. Primarily-treated gas produced by the gas preparation part enters into the gas desulfuration part, and is subjected to desulphurization to form desulfurated gas. The desulfurated gas passes through the gas power-generation part, is used for power-generation, and is fed into the gas heat supply part for heat recovery and steam supply. The method for ordinary-pressure oxygen-enriched continuous gasification-gas-steam combined cycle power-generation heat supply has a low cost, produces effects fast, has large construction flexibility and small pollution, saves energy and has good environmental benefits. The device for ordinary-pressure oxygen-enriched continuous gasification-gas-steam combined cycle power-generation heat supply has high dedusting efficiency and stability, low environmental pollution, low operation energy consumption, and reduce an investment. Flue gas produced by the device has low dust content and low sulfur content and can be directly discharged into the atmosphere without other treatment.

Description

technical field [0001] The invention belongs to the field of cogeneration of heat and power, and in particular relates to an atmospheric pressure oxygen-enriched continuous gasification-gas-steam combined power generation and heat supply method and equipment. Background technique [0002] At present, the power load and heat load of large and medium-sized chemical enterprises are relatively large. Generally, enterprises use medium and high-pressure steam boilers to match the extraction condensing generator sets to meet the steam balance and power requirements, that is, to use coal-fired boilers to produce Steam, use the steam turbine to generate electricity, and extract steam of different pressure levels to meet the steam requirements of chemical enterprise equipment. However, the problem with this method is that the scale of the unit is small and the efficiency is low. On the other hand, due to the high content of sulfur dioxide and nitrogen oxides in the flue gas of coal-fi...

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Problems solved by technology

However, the problem with this method is that the scale of the unit is small and the efficiency is low. On the other hand, due to the high content of sulfur dioxide and nitrogen oxides in the flue gas of coal-fired boilers, the current desulfurization and denitrification technologies cannot be removed to a lower level. , causing serious air pollution

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