Yellow phosphorus tail gas multiple gas-source combustion power generation system

Abstract

The invention provides a yellow phosphorus tail gas multiple gas-source combustion power generation system, belongs to the field of treatment of combustion products or combustion residues and mainly solves the problem that the existing yellow phosphorus tail gas combustion power generation technology and equipment cannot stably operate for a long time. The yellow phosphorus tail gas multiple gas-source combustion power generation system comprises a tail gas purifying device (1), a wet gas storage tank (2), a four-stage combustion boiler (3), a gas turbine generating set (4), a flue gas processing device (5) and a PLC (Programmable Logic Controller) automatic control system. The buffer collection and the pressure regulation output of multiple gas-source tail gas are implemented by the wet gas storage tank (2); the four-stage combustion boiler (3) has strong gas corrosion resistance; and high-quality dry steam can be continuously provided for the gas turbine generating set (4). The yellow phosphorus tail gas multiple gas-source combustion power generation system has high utilization rate of yellow phosphorus tail gas; power for an electric furnace for preparing phosphorus from yellow phosphorus is provided by utilizing the waste heat of the tail gas, so that the energy saving and emission reduction are implemented; and the yellow phosphorus tail gas multiple gas-source combustion power generation system is widely suitable for recycling the tail gas in the field of the yellow phosphorus production.

Description

technical field [0001] The invention relates to the field of treatment of combustion products or combustion residues, in particular to a multi-source combustion power generation system for yellow phosphorus tail gas produced by an electric furnace method. Background technique [0002] When producing yellow phosphorus by the electric furnace method, phosphate rock, silica, and coke are mixed according to the proportion of ingredients. In the electric furnace, the phosphorus element in the phosphate rock is reduced to simple phosphorus, and the coke is oxidized to carbon monoxide during the reaction process. The carbon monoxide produced by the reaction escapes from the electric furnace together with the gaseous elemental phosphorus, lime and a small amount of water vapor, and is washed and cooled by spraying water in the spray cooling tower, so that the gaseous elemental phosphorus is condensed into liquid and together with most of the dust. , enters the phosphorus recovery sy...

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Problems solved by technology

[0005] In order to solve the problem that the existing yellow phosphorus tail gas combustion power generation technology and equipment in the background technology are small in production capacity, large in number, wide in distribution, and difficult to collect tail gas, the output pressure of the tail gas is unstable, and the system is difficult to operate stably for a long time. The tail gas combustion boiler is vulnerable to corrosion. The present invention aims to provide a yellow phosphorus tail gas multi-gas source combustion power generation system with strong adaptability to various phosphorus-making electric furnaces, stable and controllable tail gas output pressure, and stable and reliable equipment operation.

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