Liquid sulfur-fixing agent and preparation method thereof

Abstract

Relating to the technical field of energy chemical materials, the invention provides a liquid sulfur-fixing agent, which at least comprises the following raw materials by weight: 5-35 parts of an organic calcium salt, 1-25 parts of a metallic salt, 1-15 parts of a surfactant, 1-30 parts of polyol and 100 parts of water. The invention also provides a preparation method of the liquid sulfur-fixing agent.

Description

technical field [0001] The invention relates to the technical field of energy and chemical materials, and more particularly to a liquid sulfur-fixing agent and a preparation method thereof. Background technique [0002] The extensive use of coal has brought a series of environmental pollution problems, with SO 2 and NO x The pollution is the most serious, which has toxic and side effects on the environment, human body, etc., and causes certain losses to the economy of our country. In the new era of increasingly stringent environmental protection requirements and increasingly perfect energy optimization, the standards for the treatment of coal-fired flue gas pollutants are more stringent. At present, the sulfur-fixing agents used in briquette products in the market generally have the problems of poor high-temperature sulfur-fixing effect and reduced combustion performance of briquettes, resulting in a certain waste of resources. The wet desulfurization process mainly inclu...

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Problems solved by technology

At present, the sulfur-fixing agents used in briquette products on the market generally have poor high-temperature sulfur-fixing effects and reduce the combustion performance of briquettes, resulting in a certain waste of resources.

The wet desulfurization process mainly includes wet limestone / gypsum desulfurization technology. The advantages of this process are mature technology, high desulfurization efficiency of more than 90%, low cost of absorbent, and waste residue can be recycled as gypsum. The disadvantage is that the equipment is prone to fouling , blockage, corrosion and wear, it is difficult to run stably for a long period of time, and the by-products are almost useless; the double-alkali flue gas desulfurization method has high desulfurization efficiency, simple system, and low investment; the system is not easy to scale and block, but the process is complicated and the maturity It is not high, and the by-product sodium sulfate is difficult to regenerate; for ammonia flue gas desulfurization, the advantages of this process are high desulfurization efficiency, which can maintain a desulfurization efficiency of 95% to 99%, low energy consumption, fast reaction rate, and high utilization rate of absorbent. The disadvantage is the high cost of the absorbent; therefore, it is difficult to find a sulfur-fixing agent that not only has good sulfur-fixing effect, high efficiency, low corrosion and stability in the desulfurization process