42results about How to "Full use of waste heat" patented technology

The invention discloses a method for smelting a lead-containing material, relating to the technological process for processing complex lead materials by utilizing a smelting method. The method is characterized in that a flash furnace and a depletion furnace are combined for smelting during the smelting process. The method of the invention has the advantages of short and continuous flow, energy saving, large capacity, efficient source utilization, environment protection, good safety and good industrial hygiene, no danger of foam slag exploration and safe production. The lead smelting process with high smelting strength and various advantages realizes single-step lead smelting, and has stronger adaptability on materials. The process is not only suitable for treating lead ore with complex components, but also suitable for treating wet smelting zinc slag, wet smelting copper slag and lead noble metal system slag, can do complementation of lead, zinc and copper and has more advantages overlead, zinc and copper jointed enterprises. The recovery rates of lead and concomitant valuable metals of copper, zinc and noble metals are higher.

The invention relates to a continuous pyrolysis incineration device for full-scale electronic and electrical product waste. The continuous pyrolysis incineration device structurally comprises a feeder, a pulley feed hopper, a pyrolysis gasifier, a pyrolysis gas flue, a combustion furnace, a G-L air heat exchanger, a quenching absorption tower, a bypass flue, a chimney exhaust port, a cat ladder, an activated carbon storage tank and a chimney. The continuous pyrolysis incineration device has the advantages that dangerous electronic and electrical product waste, medical waste, organic waste and other kinds of dangerous combustible solid waste with a certain heat value are treated through a pyrolysis incineration technology, pyrolysis and high-temperature incineration technologies are combined in an optimized mode, low-temperature gas and high-temperature melt are combined together, waste incineration is conducted in the steps of pyrolysis, premixing and incineration, the synthetic technological process and technological conditions of pyrolysis incineration, energy recovery and flue gas cleaning are achieved and have perspectiveness, the overall technology has the outstanding harmless characteristic, compatibility and resourcezation are remarkable, material applicability is high, no hazardous reaction medium or poisonous and harmful solvent is involved in the process, and nature greenization can be achieved.

The invention relates to double loop double pyrolysis incinerator and its using method. Its features are that drying apparatus is formed by horizontal rotary kiln drying device, steam separator, and fume reflux line; the feed port of the horizontal rotary kiln is connected with discharge port of the feeding device; its discharge port is connected with the feed port above secondary burning chamber. While running, part of high temperature fume of secondary burning chamber can enter the rotary kiln to process reverse drying preheat and pyrolysis for the garbage; cooled fume is inducted into the secondary burning chamber by secondary fan after dehydrating by steam separator. Compared with exiting technique, the invention has the advantages of continual heat transfer, fast gasification rate, full burning, processing domestic garbage without auxiliary fuel etc.

The invention provides a rotary cement kiln waste heat utilization system which comprises a rotary cement kiln and a plurality of heat utilization devices. At least one heat utilization device is the multistage heat accumulation system which comprises multiple stages of heat accumulation heat exchangers which are connected through connection sections. Heat accumulation capabilities of heat accumulation materials in the heat accumulation heat exchangers are different. The heat accumulation capabilities of the heat accumulation materials in the multiple stages of heat accumulation heat exchangers are reduced gradually along the smoke flowing direction. Waste heat generated during cement production is fully utilized to maximize the heat exchange efficiency, save energy and achieve the aim of protecting environment and saving energy.

The invention provides an asymmetrically arranged heat exchanger, the heat exchanger includes a header, and left and right coils are distributed on the left and right sides of the header. The coils are arranged at intervals, a right coil is arranged between two adjacent left coils, and a left coil is arranged between two adjacent right coils. The heat exchanger designed in the present invention can enhance heat exchange and remove dust deposits at different heights, and enhance the effects of heat exchange and dust removal.

The invention is mainly applied in the technical field of hydrogen chloride synthesis, and in particular relates to a byproduct steam hydrogen chloride graphite synthetic furnace provided with a coal economizer. The byproduct steam hydrogen chloride graphite synthetic furnace provided with the coal economizer comprises a graphite furnace cylinder and a steam pocket, wherein a gas remixer is arranged in the top of the graphite furnace cylinder; an evaporation structure section, a coal economizer section and a cooling structure section which are hermetically connected are arranged at the top of the gas remixer sequentially from bottom to top; the upper part and the lower part of an evaporation section metal structure cylinder body are connected in series with the steam pocket through circulating pipelines; an integrated furnace bottom seal head is arranged at the bottom of the graphite furnace cylinder; a premixing type synthetic furnace lamp holder is arranged on the integrated furnace bottom seal head; an integrated furnace top seal head is arranged at the top of the cooling structure section; and a hydrogen chloride outlet is formed in the integrated furnace top seal head. According to the byproduct steam hydrogen chloride graphite synthetic furnace with the coal economizer, heat energy carried by the hydrogen chloride can be recovered to be used for preheating deionized water of the byproduct steam, the waste heat is utilized more completely and the heat utilization rate is increased; meanwhile, the hydrogen chloride is further cooled, the cooling load is reduced, and the advantages of energy conservation, consumption reduction, complete utilization of the waste heat and high heat utilization rate.