4results about How to "Lower discharge temperature" patented technology

This utility model discloses a flue gas waste heat recovery device, relating to the field of heat recovery technology, aiming to solve the problem of low recovery efficiency and waste in existing heat recovery devices. This boiler flue gas heat recovery device guides flue gas flow through a flue pipe, sequentially passing through a gas-liquid heat recovery component and a gas-to-gas heat recovery component to achieve staged recovery of flue gas waste heat. The flue pipe includes a connecting pipe and a heat recovery pipe. The connecting pipe is located at both ends of the heat recovery pipe, connecting it to the boiler flue gas outlet and the blower. The gas-liquid heat recovery component is arranged on the upper part of the heat recovery pipe, near the boiler flue gas outlet, and can preferentially exchange heat with high-temperature flue gas. The gas-to-gas heat recovery component is located behind the gas-liquid heat recovery component, also installed on the upper part of the heat recovery pipe. It mainly reduces the flue gas emission temperature through heat exchange between flue gas and fresh air or low-temperature flue gas, maximizing waste heat recovery and improving overall energy efficiency.

A novel plate heat exchanger absorption chiller belongs to the field of heat exchange equipment technology. It employs a two-stage low-temperature heat return system, a refrigerant plate heat exchanger, and a first-stage low-temperature heat return system connected in series and in parallel with the low-temperature heat exchanger. A dilute solution is heated by heat from the shell side and collected before entering the plate low-temperature regenerator. In the plate low-temperature regenerator, it is heated by high-temperature refrigerant vapor from the plate high-temperature regenerator, concentrating it into an intermediate concentration solution. This intermediate concentration solution is then pumped through an intermediate liquid pump, exchanging heat with the high-temperature heat exchanger and the parallel high-temperature heat return system, before entering the plate high-temperature regenerator. There, it is heated by external steam to generate refrigerant vapor, concentrating it into a high-concentration absorbent. Finally, it returns to the absorber to absorb refrigerant vapor generated from evaporation in the evaporator, diluting it into a dilute solution. This invention effectively reduces the overall solution filling volume and unit cost, significantly improves the unit's heat exchange efficiency, effectively stabilizes the liquid level, ensures stable unit operation, and enhances the unit's operational safety.

The utility model belongs to the technical field of grain drying equipment, and particularly relates to a mixed flow and cross flow grain dryer. A mixed flow drying section, a grain guiding section, a transverse flow drying section and a grain discharging section are sequentially arranged in the dryer body from top to bottom, a combustion device is arranged on one side of the dryer body, an air suction device is arranged on the other side of the dryer body, a first air inlet cover is arranged at the air inlet end of the mixed flow drying section, and a first air outlet cover is arranged at the air outlet end of the mixed flow drying section. A second air inlet cover is arranged at the air inlet end of the cross flow drying section, a second air outlet cover is arranged at the air outlet end of the cross flow drying section, the combustion device is communicated with the second air inlet cover, the second air inlet cover is communicated with the first air inlet cover through a fan and a first communicating pipe, the first air outlet cover is communicated with the second air outlet cover through a second communicating pipe, and the air suction device is communicated with the first air outlet cover; through the up-down combination of the mixed flow drying section and the transverse flow drying section, the advantages of mixed flow drying uniformity and high transverse flow drying speed are considered, and staged efficient drying of grains in which mixed flow is performed firstly and then transverse flow is performed is realized.

The present application provides a vertical furnace segmented cooling and staged heat recycling system and method, the vertical furnace segmented cooling and staged heat recycling system comprising: a vertical furnace having a reduction zone and a cooling zone from top to bottom; a feeding bin arranged at the top inlet of the vertical furnace and a cooler arranged at the bottom outlet of the vertical furnace; a first-stage cooling and heat recycling unit having a first gas supply pipe communicated with the lower part of the cooling zone and a first heat recovery pipe communicated with the upper part of the cooling zone and the upper part of the reduction zone; and a second-stage cooling and heat recycling unit having a second gas supply pipe communicated with the inlet of the cooler and a second heat recovery pipe communicated with the cooler and the feeding bin. The present application can solve the problem of insufficient heat recycling in the existing vertical furnace cooling system, resulting in energy waste.