Megawatt carbon dioxide heat pump system applied to field of sewage waste heat recovery

Abstract

The invention discloses a megawatt carbon dioxide heat pump system applied to the field of sewage waste heat recovery. The megawatt carbon dioxide heat pump system comprises a sewage waste heat recovery circulation module, a carbon dioxide heat exchange circulation module and a water supply system, wherein the sewage waste heat recovery circulation module comprises a sewage pool, a pressure pump, a circulating hot water tank, a heat exchange chamber, a backwash pressure pump, a sewage purification device and a sewage treatment pool which are sequentially communicated; the carbon dioxide heat exchange circulation module comprises a compressor unit, a gas cooler, a heat regenerator, an evaporator and a gas-liquid separator which are communicated, and forms a carbon dioxide heat exchange circulation loop; the compressor unit is composed of a plurality of compressors in parallel; the heat regenerator is connected with a first heat regenerator loop and a second heat regenerator loop; and the water supply system comprises a water supply water tank, a process water pump, cooling equipment and a cold water tank which are communicated. The recovery system effectively supplies the heat of sewage waste heat to the heat pump system for use, has the advantages of being simple in structure, stable in working and high in economic cost performance, and also realizes the production requirements of environmental protection and green.

Description

technical field [0001] The invention relates to the technical field of sewage waste heat utilization, in particular to a megawatt-level carbon dioxide heat pump system applied in the field of sewage waste heat recovery. Background technique [0002] The approaching energy crisis forces people to urgently develop new energy sources, and an effective way to alleviate the energy crisis is to improve energy utilization efficiency. Therefore, the development of waste heat utilization technology and the development of new multiple waste heat utilization devices will have broad development prospects. Many practices have proved that many energy resources that are not utilized in our lives are wasted in vain, such as high-temperature boiler flue gas, high-temperature automobile exhaust, public bathroom wastewater with a medium temperature, etc., especially the waste heat utilization of bath wastewater , usually the water coming out of the bath faucet is about 40°C, the bathing proce...

AI Technical Summary

Problems solved by technology

Many practices have proved that many energy resources that are not utilized in our lives are wasted in vain, such as high-temperature boiler flue gas, high-temperature automobile exhaust, public bathroom wastewater with a medium temperature, etc., especially the waste heat utilization of bath wastewater , usually the water coming out of the bath faucet is about 40°C, the bathing process generally only consumes a temperature difference of 10°C, and the bathing wastewater is still at about 30°C, this part of the heat is wasted, and the bath water is heated to increase it by 30°C ℃ also need to consume energy resources

As a result, the utilization rate of energy is very low, and 2 / 3 of the energy is wasted in vain. Under the situation of energy shortage and traditional energy usage costs continuing to rise, how to improve the efficiency and use of waste heat from sewage has become a challenge for human society. An important issue in front of us, once it is used rationally, it is equivalent to increasing economic benefits, and at the same time reducing the greenhouse effect of the atmosphere, which is in line with the concept of environmental protection

[0003] The carbon dioxide heat pump system of the present invention recovers the waste heat of sewage, but most of the current waste heat recovery systems are too small in power to be suitable for some high-power and large-scale geothermal plants, and there are few hot water system integration innovations

Images