Composite fuel coal sulfur fixing agent and its prepn

Abstract

The composite fuel coal sulphur fixing agent is added into burning coal to reduce released harmful gas SO2. It consists of mixed complex carbonate, calcium carbonate, calcium oxide and magnesium carbonate crushed to 1 mm below size. In different burning temperature, the sulphur fixing agent absorbs SO2 produced by burning coal to produce sulfide staying in cinder, and reduces the exhausted SO2 ans decrease environmental pollution. Using the sulphur fixing agent as clean coal additive is convenient and high in effect.

Description

technical field [0001] The invention relates to a coal-fired composite sulfur-fixing agent, which is an additive added to coal-fired coal for reducing excessive sulfur dioxide harmful gas released during coal combustion. The invention also relates to a preparation method of the sulfur-fixing agent. Background technique [0002] The organic sulfur and sulfide sulfur contained in coal are called combustible sulfur. When combustible sulfur is burned with coal, sulfur dioxide (SO 2 ), and the emission of sulfur dioxide into the atmosphere will cause air pollution. Adding a sulfur-fixing agent to the coal combustion, so that the sulfur dioxide released during the coal combustion process reacts with the sulfur-fixing agent to form a stable solid solution substance, thereby reducing the sulfur dioxide content in the exhaust flue gas. Because of its simple operation, it is easy to implement Low cost, being more and more adopted. Most of the sulfur fixatives currently used for co...

AI Technical Summary

Problems solved by technology

The temperature of commonly used coal-fired boilers is generally above 1100°C, so the sulfur-fixing efficiency of calcium-based sulfur fixation agent is not high in actual use, and because it needs to absorb a certain amount of combustion heat during the reaction process, it will also reduce the combustion efficiency. The problem of coal combustion temperature