38results about How to "High heat recovery rate" patented technology

The invention relates to a method for synthesizing ethylbenzene, and mainly solves the problems that ethylene must be taken as a raw material, the cost of the raw material is high and the content of dimethylbenzene is high in the product ethylbenzene in the conventional ethylbenzene production process. The method comprises the following steps that: a) benzene and ethanol enter an alkylation reactor loaded with a ZSM-5 nanoscale molecular sieve catalyst in a molar ratio of (2-8):1 under gas phase conditions and react to form a mixture 103 comprising benzene, ethylbenzene, diethylbenzene and water; b) the mixture 103 sequentially passes through a benzene recovery tower, an ethylbenzene recovery tower and a polyethylbenzene recovery tower so as to separate the water, the benzene, the ethylbenzene and the diethylbenzene from the mixture 103; and c) the partial benzene and diethylbenzene which are obtained through the separation enter a transalkylation reactor in a weight ratio of (2-10):1 under liquid phase conditions and are contacted with a Beta molecular sieve catalyst for a transalkylation reaction so as to generate the ethylbenzene. The technical scheme better solves the problems; in the scheme, the ethylbenzene is synthesized by using the ethanol as the raw material instead of the ethylene, the cost of the raw material is low, and the content of the dimethylbenzene in the product ethylbenzene is low; and the technical scheme can be used for the industrial production of the ethylbenzene.

The invention discloses a multi-angle multi-surface multi-layer 360-degree air-supplying sinter ore cooling tower and belongs to the technical field of sintering equipment for iron making. The multi-angle multi-surface multi-layer 360-degree air-supplying sinter ore cooling tower is used for cooling sinter ores and recycling heat energy and consists of a feeding skew bridge, a distribution dust and waste air collection chamber, a dust collecting pipeline, a distributing device, a high-temperature heat energy recycling system, a boiler circulating air reutilization system, a medium-temperature cooling recycling system, a low-temperature cooling system and an unloading system. The sinter ores are uniformly packed into the cooling tower via the feeding skew bridge by a distributor; the high-temperature heat energy recycling system is used for sending utilizable hot air to a boiler; circulating air of the boiler is returned to a high-temperature section of the boiler by the boiler circulating air reutilization system so as to cool the sinter ores; cooling fans are uniformly mounted at a low-temperature section in the cooling tower in a layered way so as to cool the sinter ores; air vents and ventilating pipelines are respectively arranged at a medium-temperature section and the low-temperature section to realize flowing of cooling air inside the tower so that the sinter ores can be cooled. The multi-angle multi-surface multi-layer 360-degree air-supplying sinter ore cooling tower disclosed by the invention has the characteristics of being small in floor area, near in wind run, free of wind loss, high in wind utilization rate, high in heat energy collection rate, good in cooling effect and free of dust diffusion.

The invention relates to a catalytic bed furnace core structure with a guide shield. The structure comprises an upper end plate, a lower end plate and a furnace core outer peripheral plate; the upper end plate and the lower end plate are respectively fixedly mounted on the upper end and the lower end of the furnace core outer peripheral plate; a furnace core inner peripheral plate is arranged in the furnace core outer peripheral plate; gas inlet paths and gas outlet paths are alternatively arranged between the furnace core inner peripheral plate and the furnace core outer peripheral plate; the inlet of each gas inlet path is arranged on the upper end plate; the outlet of each gas inlet path is arranged between the lower end plate and the furnace core inner peripheral plate; the inlet of each gas outlet path is arranged between the upper end plate and the furnace core inner peripheral plate; the outlet of each gas outlet path is arranged on the lower end plate; a guide shield with an inversed rectangular pyramid structure is arranged at the lower face of the middle of the upper end plate. The catalytic bed furnace core structure is simple in arrangement and scientific and reasonable in design, the heat efficiency of the furnace core structure can be effectively improved, the heat loss is reduced, the heat recovery utilization rate can be improved, the temperature in the furnace core structure is more uniform during burning, and the burning efficiency and the purifying rate are improved.

Disclosed is a high temperature-type unitized regenerative fuel cell using water vapor, which exhibits high hydrogen (H2) production efficiency and superior power generation ability.

The invention discloses a heat exchanger of a water dispenser which comprises an outer pipe, an inner pipe arranged in the pipe cavity of the outer pipe, a first PPR inner wire straight joint and a second PPR inner wire straight joint, wherein the first PPR inner wire straight joint and the second PPR inner wire straight joint are connected at the two ends of the outer pipe respectively. One end of the first PPR inner wire straight joint is connected with a first stainless steel outer wire three joint, a first stainless steel inner and outer wire straight joint and a decompression valve in sequence, wherein the first stainless steel outer wire three joint is further connected with a check valve. One end of the second PPR inner wire straight joint is connected with a second stainless steel outer wire three joint, a second stainless steel inner and outer wire straight joint and a cross-shaped heat control valve. The inner side of the first stainless steel inner and outer wire straight joint and the inner side of the second stainless steel inner and outer wire straight joint are provided with isolation seal rings. Tap water enters from the check valve to be subjected to heat exchanging and flows back a water container, boiled water enters from the cross-shaped heat control valve to be subjected to heat exchanging, then the temperature of the boiled water is reduced, and the boiled water becomes warm water which can be drunk directly. The heat exchanger of the water dispenser is convenient to install, free of welding, low in manufacturing cost, easy to maintain, high in heat recovery utilization efficiency and long in service life.

The invention relates to a catalytic combustion bed furnace core structure with a heater. The structure comprises a furnace core outer peripheral plate as well as an upper end plate and a lower end plate which are respectively mounted on the upper end and the lower end of the furnace core outer peripheral plate; a furnace core inner peripheral plate is arranged in the furnace core outer peripheral plate; gas inlet paths and gas outlet paths are alternatively arranged between the furnace core inner peripheral plate and the furnace core outer peripheral plate; the inlet of each gas inlet path is arranged on the upper end plate; the outlet of each gas inlet path is arranged between the lower end plate and the furnace core inner peripheral plate; the inlet of each gas outlet path is arranged between the upper end plate and the furnace core inner peripheral plate; the outlet of each gas outlet path is arranged on the lower end plate; a gas guide shield with an inversed rectangular pyramid structure is arranged at the lower face of the middle of the upper end plate; the heater is arranged in the furnace core body corresponding to the outlet of each gas inlet path and is fixedly mounted on the furnace core outer peripheral plate. The catalytic combustion bed furnace structure is simple in arrangement, the heat efficiency of the furnace core body can be effectively improved, the heat loss can be reduced, the heat recovery utilization rate can be improved, the temperature in the furnace core structure can be more even during combustion, and the burning efficiency and the purifying rate are improved.