35results about How to "Complete gasification" patented technology

The invention provides a gasification process for producing synthesis gas from garbage and biomass raw materials, which relates to a gasification processing technique of garbage and biomasses. The gasification process is characterized in that the technological process mainly comprises a raw material solid matter process, a gas phase circulation loop, a calcium oxide circulation loop and a synthesis gas drawing process; one or a mixture of more garbage, the biomasses and coal is sent into a gasification furnace to perform gasification so as to generate the synthesis gas; and simultaneously, calcium oxide is sent into the gasification furnace, an exothermic reaction of absorbing carbon dioxide by the calcium oxide provides the heat required by the gasification reaction in the furnace, and water vapor is sent into a plasma spraying gun and is heated to more than 3,100 DEG C to generate H2, O, O2 and H2O<*> which are sprayed into the gasification furnace to perform reactions with the garbage and the biomasses and supply heat into the furnace. The gasification process adopts a measure to spray the calcium oxide into the furnace to not only greatly reduce the electric energy consumptionof the plasma spraying gun, but also improve the quality and the yield of the synthesis gas, thus the aim of transforming the garbage and the biomasses into clean energy can be achieved easily.

The invention provides a steam recovery method and device, comprising the following steps: compressing the low-pressure steam in two or more stages to obtain medium-pressure steam or high-pressure steam; spraying water on the superheated steam obtained after each stage of compression to cool down , to reduce its superheat. The steam recovery method provided by the present invention enables the sprayed liquid droplets to be heated in advance to the saturation temperature under the pressure of the sprayed steam, which can realize the complete gasification of the sprayed liquid, the appropriate amount of sprayed liquid, and no liquid accumulation inside the compressor Effect. The steam recovery method and device provided by the present invention can be used to recover and utilize low-pressure steam in a melamine production device, and improve the utilization value of the low-pressure steam by-produced in a urea washing tower of the melamine production device.

The invention provides a self-circulation plasma gasification furnace and relates to plasma equipment. The self-circulation plasma gasification furnace comprises a gasification furnace body and a plasma device. The gasification furnace body is formed by a fireproof furnace wall and a heat preservation wall, the gasification furnace body is provided with a feeding port for feeding and a synthesis gas outlet for discharging, a gasification area is arranged on the lower portion in the fireproof furnace wall of the gasification furnace body, a circulation gas outlet for discharging is formed in the top of the gasification furnace body, a circulation return gas port for feeding is formed in the gasification area on the lower portion of the gasification furnace body, the circulation gas outlet and the circulation return gas port are communicated through a circulation return gas pipe, a plasma electric arc area is arranged below the gasification area in the gasification furnace body, and a first discharging assembly and a second discharging assembly of the plasma device are installed on the part, at the plasma electric arc area, of the fireproof furnace wall. The self-circulation plasma gasification furnace is suitable for being applied to the field of solid waste disposal, and solid organic waste is converted into hydrogen-rich synthesis gas meeting the application requirement of chemical materials; water vapor, soot, tar and the like generated in the drying and pyrolyzing process of the raw materials return to the gasification area through the circulation return gas pipe for secondary gasification, and complete gasification is achieved.

The invention belongs to the field of wastewater treating, and particularly relates to a system and a method for treating high-concentration organic waste liquid. The organic waste liquid can be efficiently processed in a low-consumption, energy-saving and environment-friendly manner. The system for treating the high-concentration organic waste liquid comprises a gasification chamber, a combustor, a smoke pipe, a waste liquid pump, a waste liquid tank, a settling chamber, demisting baffles and a condenser. The gasification chamber is located at the top of the combustor. A primary auxiliary fuel nozzle, a waste liquid nozzle and at least one air inlet are formed in the upper portion of the side wall of the gasification chamber. A secondary air inlet and a secondary auxiliary fuel nozzle are arranged at the upper portion of the side wall of the combustor. An exhausting opening of the combustor directly extends into the waste liquid tank through the smoke pipe. The settling chamber is installed at the top of the waste liquid tank. The multiple demisting baffles are installed at the upper portion of the interior of the settling chamber. A gas outlet in the top of the settling chamber is communicated with a gas inlet of the condenser through a pipe. An inlet of a condenser heat exchanging pipe is connected with a waste liquid delivery pipe. A waste liquid outlet in the waste liquid tank is sequentially communicated with the waste liquid pump and the waste liquid nozzle through a pipe.

The invention discloses a micro-negative-pressure black liquor gasifier. A main body is represented as a dual-crown cover cylindrical body which is covered by a steel shell (3), wherein a supporting drum (1) is connected to a lower crown cover of the cylindrical body; a black liquor atomizing spray gun base (4), an oxygen inlet (5) and a preheated gas inlet (6) are arranged on an upper crown cover; a gasified gas and alkali melt outlet (2) is formed on the side face of the lower part of the cylindrical body, and an anti-explosion device (7) is arranged on the side face of the upper part of the cylindrical body; a liner of the steel shell (3) is a heat insulating layer (8); a carbon depositing plane (9) is constructed in an inner cavity of the black liquor gasifier through an alkali resistant and high-temperature resistant material; a carbon depositing plane support (10) is arranged below the carbon depositing plane (9); the entire inner cavity is divided into a replenishing reaction chamber (11) and a gasifying chamber (12). By mounting the carbon depositing plane on the gasifier, a contact area between coke and water vapor is increased and contact time between a carbon layer and high-temperature water vapor is prolonged, so that the black liquor is more thorough in a gasifying reaction, and yields of CO and H2 are improved.

The invention provides a system and equipment for producing synthesis gas by garbage and biomass raw materials, which relates to garbage and biomass gasification equipment. The system and the equipment are characterized in that a vapor circulation loop and a calcium oxide circulation loop are arranged in the system; the garbage and the biomass raw materials are vaporized by an exothermic reactionof absorbing CO2 of the calcium oxide in a gasification furnace to cooperate with thermal plasma, so that the garbage and the biomass raw materials are converted into high heating value synthesis gasfor cleaning energy or chemical raw materials. The system mainly comprises a multiphase circulation gasification furnace, a plasma spray gun, the vapor circulation loop, the calcium oxide circulationloop, a wet purification tower and a gas holder, wherein a circulation output interface of the gasification furnace is connected to a gas-solid separator; a gas outlet of the gas-solid separator is connected to a circulating fan; an air outlet of the circulating fan is connected to the vapor circulation input interface of the gasification furnace; a dipleg of the gas-solid separator is connected to a feed delivery valve; the feed delivery valve is connected to a calcium oxide calcining furnace through a solid phase conveying pipe; and a calcium oxide outlet of the calcium oxide calcining furnace is connected to a calcium oxide jet tube of the gasification furnace through a refeed line.