Briquette coal for reducing fluorine and arsenic pollution in stone coal combustion region

Abstract

The invention relates to briquette coal for reducing fluorine and arsenic pollution in a stone coal combustion region, and provides a manufacturing method of fluorine fixation and arsenic fixation briquette coal applicable to the stone coal combustion region. The briquette coal is prepared from the following ingredients: 1, charred amomum (or anthracite); 2, ordinary blocky stone coal; 3, fluorine fixation and arsenic fixation additives; 4, clay, wherein the additives are lime powder and powdery slimy stone coal. Through in-field evidence and scientific experiment, the condition that the indoor air pollution in the southern part of Shanxi is the real source of fluorine poisoning and arsenic poisoning is deducted. Through household survey and questionnaire analysis, the briquette coal proportion capable of meeting the people's living needs and reducing the coal consumption pollution is found. For the optimal proportion scheme, the fluorine and arsenic release factor is averagely and respectively reduced by 45 percent and 72 percent; the concentration of fluorine, sulfur dioxide and ammonia gas in the air is respectively reduced by 34.1 percent, 96.47 percent and 92.51 percent. The briquette coal is directly and successfully manufactured in a briquette coal plant; the materials are easily obtained; the cost is low; the briquette coal is easy to popularize. The briquette coal has good experiment effects in farmer homes and can be widely applied to residential stoves in the stone coal combustion region.

Description

technical field [0001] The invention relates to a method for preparing clean briquette, more specifically, relates to a method for producing clean briquette which is added with a fluorine-fixing and arsenic-fixing agent and is suitable for areas where stone coal is used. Background technique [0002] China is the only region in the world where coal-burning fluorosis and arsenicosis have been reported. Coal-burning fluorosis mainly involves 12 provinces including Guizhou, Yunnan, Sichuan, Hunan, Chongqing, Hubei, and Shaanxi. According to China's health statistics in 2014, local coal burning caused about 14.5372 million people to suffer from dental fluorosis and 1.8819 million people to suffer from skeletal fluorosis. In 2014, there were 18,628 patients with endemic arsenicosis caused by coal-burning pollution in China, mainly involving 8 counties in southern Shaanxi and 4 counties in western Guizhou. Among them, southern Shaanxi accounted for 83% of the total number of coa...

AI Technical Summary

Problems solved by technology

In addition, ordinary stone coal is hard, and it is granular after being crushed, so it is not easy to be bonded and formed, so a binder needs to be added; due to the high ash content of stone coal, the amount of clay added cannot exceed 10%, otherwise it will affect the burning resistance of the briquette

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