A dry powder pressurized gasification device with organic wastewater treatment

Abstract

The invention provides a dry powder pressurizing gasification device with organic wastewater treatment, which comprises a gasification furnace casing, wherein a gasification furnace inner water wall is arranged in the gasification furnace casing; a slag bath is arranged at the bottom of the gasification furnace inner water wall; an output pipe at the bottom of the slag bath extends outside the gasification furnace casing and is connected with the inlet of a slag collecting tank; the outlet of the slag collecting tank is connected with a slag lock hopper; a processing burner is arranged at the lower part of the gasification furnace casing; two sections of desuperheating water spray nozzles are arranged in the middle of the gasification furnace casing; the upper parts of the gasification furnace casing and the gasification furnace inner water wall are connected with a chilling tank through an air guiding section; the gas outlet of the chilling tank is connected with a hydraulic cyclone through a venturi scrubber; the gas outlet of the hydraulic cyclone is connected with a washing tower. According to the dry powder pressurizing gasification device, the traditional upstream dry pulverized coal pressurizing gasification technological processes are not prolonged and the complexity of the processes and operation are not added, only a few devices such an organic wastewater accumulator tank and a filter are additionally arranged and the degradation treatment of organic wastewater with treating difficulties and high treating fees in chemical industry production can be achieved.

Description

technical field [0001] The invention belongs to the technical field of energy and chemical industry, and in particular relates to a dry powder pressurized gasification device with organic wastewater treatment. Background technique [0002] In recent years, my country's oil consumption has increased year by year, and at the same time, international oil prices have soared. Coal-based clean energy technologies such as coal-based liquid fuels, coal-based alternative natural gas, coal-based chemicals, IGCC and polygeneration have attracted more and more attention. [0003] Large-scale entrained bed gasification technology is the key technology and leading technology of coal-based clean energy, especially large-scale dry powder pressurized gasification technology due to its high energy utilization efficiency, wide adaptability of coal types, long single operation time, low water consumption, no The production of organic pollutants such as tar, phenol, and naphthalene has become th...

AI Technical Summary

Problems solved by technology

For example, in the process of replacing natural gas with coal, some coal-to-gas plants adopt fixed-bed gasification technology, which can increase the CH4 content in the synthesis gas, but a large amount of organic wastewater will be generated during the production process of fixed-bed gasification

In addition, some production process devices may also generate organic wastewater in the downstream synthesis process

These organic wastewaters are difficult to treat, and large-scale organic wastewater treatment devices need to be installed, and the treatment costs are extremely expensive

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