40results about "Gas purification by treating with solids" patented technology

A gasification process is divided into three processes: a gasification furnace for carrying out gasification process by pyrolysis and gasification (pyrolysis gasification phase, first process), a combustion furnace for burning char to obtain calcined active chemical (char combustion phase, second process) and a gas purification furnace for purifying gasified gas (gasified gas purification phase, third process). Through heat transmission by the fluid heat medium and chemical reactions in respective phases by the chemical, the gasification furnace is independently controlled to a low or medium temperature (773-1073 K) which is required for gasification and which enables absorption of CO2; and the gas purification furnace is controlled to a high temperature (1073 K or more) required for gas purification.

The invention discloses an integrated device and process for carrying out desulfurization, dust removal and modification on coal-pyrolyzed gas. Raw coke oven gas from a medium and low-temperature coal dry-distillation furnace or a coke oven directly enters an integrated moving bed purifier, and the desulfurization, dust removal and modification processes are implemented without reducing the temperature by utilizing the physical sensible heat taken by the gas so as to obtain clean and high-quality coal tar and gas. The integrated moving bed purifier is divided into three parts, including a desulfurization region, a primary catalytic region and a secondary catalytic region which are sequentially filled with a desulfurizing agent, a natural ore type tar cracking catalyst and an artificial tar cracking catalyst; when dust in the gas passes through a particle bed which is in a stacked state, the aim of dust purification can be reached by impact, sedimentation, interception and the like. All the desulfurizing agent and catalysts can be regenerated and recycled in place. The device and the process disclosed by the invention can be used for implementing the desulfurization, dust removal and modification in one step, are beneficial to simplification of the subsequent process of a coal thermal process, and have the advantages of increasing the added value of pyrolysis products and reducing the environmental pollution.

The invention discloses a solid waste plasma gasification pyrolysis recycle transformation method, which belongs to the technical field of garbage disposal, and mainly comprises the four steps of sorting and pretreating wastes, carrying out gasification pyrolysis on plasma, purifying gas and regenerating energy. Through adding a combustion-supporting mixture, an average comprehensive heat value and the fixed carbon content of the solid wastes are improved, so that the power consumption during a plasma gasification pyrolysis process is reduced; meanwhile, the method and a power station are linked to offset a part of and even all electric energy in the later period, so that the operation cost is reduced. A pulsed electromagnetic valve is utilized for spraying a dioxin inhibitor, dioxin is prevented from compounding at a low-temperature area, a later-period filtration and adsorption device is cooperated to thoroughly purify gas, and finally residues produced by gasification can be used for manufacturing microcellular foam glass used as an adsorbing medium, so that cyclic utilization of resources is realized. The solid waste plasma gasification pyrolysis recycle transformation method provided by the invention is high in recovery utilization rate, free of poisonous gas and matter discharge, green and environmentally-friendly, and favorable in economic benefit.

A tar removal device removes tar contained in a gasification gas (9) generated in a gasification furnace of a two-towered gasifier having a combustion furnace (43) heating a heating medium (A) and the gasification furnace (47) introducing the heating medium (A) heated in the combustion furnace to perform gasification of a starting material (48). The tar removal device includes a tar separation unit (2) that introduces the gasification gas from the gasification furnace to fluidize the circulating particles (B) so as to adhere the tar in the gasification gas to the circulating particles, and a tar combustion unit (3) that introduces the circulating particles to which the tar is adhered at the tar separation unit, fluidizes the circulating particles using air (15) so as to burn the tar adhered to the circulating particles, supplies the combustion gas (16) in which the tar is burnt to the combustion furnace as a gas for combustion, and returns the circulating particles from which the tar is burnt and removed to the combustion furnace.

The invention discloses a synthesis gas desulfurization agent and its preparation method and application. The synthesis gas desulfurization agent of the present invention is a conventional zinc oxide desulfurization agent modified by metal oxides and non-metal oxides, and the prepared desulfurization agent has a large With good structural stability, it still has a high ability to remove sulfide under high water vapor partial pressure and high temperature oxidation. The above-mentioned syngas desulfurizer is a renewable synthetic It is a solid desulfurizer for removing hydrogen sulfide and organic sulfur from gas, which can not only remove hydrogen sulfide and organic sulfur in synthesis gas, but also save energy and reduce consumption.

The invention relates to a technology for producing cooled coal gas with no discharging of phenolic water, belonging to the technical field of coal gas production and providing a technology for producing cooled coal gas with no discharging of phenolic water which has no contamination of the environment and can save energy and investment. The process flow of a single stage coal gas producer is as follows: the hot coal gas enters a ceramic filter deduster from the outlet of the coal gas producer; then enters an indirect cooling device to carry out heat exchange with phenolic water and the temperature drops to 40-50 DEG C; the cooled coal gas enters an electro detarrer to remove tar oil and small dust particles; the purified coal gas is supplied to users through a coal gas compresser; the phenolic water is heated into phenolic vapor and is used as gasification agent after being introduced into the bottom of the coal gas producer. The process flow of a two-stage coal gas producer is as follows: the lower-stage gas emerges out of the coal gas producer and passes through the ceramic filter deduster and the indirect cooling device; the upper-stage coal gas emerges, enters a rough electrical coke arrester and a refined electrical coke arrester, and is converged with the lower-stage coal gas to obtain purified coal gas, thus optimizing the dedusting and heat exchanging processes of hotcoal gas, improving dedusting effect and hot exchange efficiency, being capable of saving investment of devices, protecting environmental and saving energy.

The invention is aimed to provide a method of removing sulfur in a fluid bed furnace, and a desulfurizing agent. In this method of removing the sulfur in a gas generated in the furnace in the fluid bed furnace for burning the fuel and / or raw material by fluidized combustion, the desulfurizing agent including a lime cake is charged into the furnace. Preferably, a particle diameter of the lime cake is 0.08 mm or more, and a mol ratio of Ca in the desulfurizing agent to the sulfur in the fuel and / or raw material is 0.5-7.