3results about How to "Raise feed temperature" patented technology

The application relates to an evaporation crystallization device and a wastewater treatment system. The evaporation crystallization device comprises an evaporation crystallization device and a wastewater treatment system; a crystallization separator is communicated with an evaporator and can perform gas-liquid separation on a gas-liquid mixture from the evaporator, so that solutes in a liquid phase are crystallized, and secondary steam is separated; a latent heat recovery device is communicated with the evaporator and the crystallization separator, can be communicated with raw material liquid, and can exchange heat between the secondary steam and the raw material liquid, so as to pre-heat the raw material liquid; the evaporator can heat the pre-heated raw material liquid to boiling by using live steam, so as to form a gas-liquid mixture. The evaporation crystallization device can exchange heat between the secondary steam generated by the crystallization separator and the raw material liquid by arranging the latent heat recovery device, the feeding temperature of the raw material liquid is improved, the live steam consumption of the raw material liquid in the evaporator can be reduced, and the waste of the latent heat of the secondary steam can be avoided; the secondary steam does not need more circulating water for cooling after heat exchange with the raw material liquid, and the energy consumption can be saved.

This invention discloses a system for extracting sodium chloride crystals from wastewater, comprising a raw material tank, a thin-film evaporator, a thickener, and a mother liquor tank. The raw material tank stores wastewater, and its outlet is connected to the inlet of the thin-film evaporator. The bottom outlet of the thin-film evaporator is connected to the inlet of the thickener. The upper overflow port of the thickener is connected to the inlet of the mother liquor tank, and the outlet of the mother liquor tank is connected to the thin-film evaporator. The bottom of the thickener has an outlet for material discharge. Wastewater enters the thickener from the raw material tank and the thin-film evaporator. The clear liquid from the thickener flows out from the upper overflow port and returns to the thin-film evaporator via the mother liquor tank. The system also includes a heat exchanger located between the raw material tank and the thin-film evaporator. The wastewater flowing from the raw material tank is heated by the heat exchanger before entering the thin-film evaporator. This invention provides a system for extracting sodium chloride crystals from wastewater, reducing system operating energy consumption and production costs.

The utility model relates to a chemical industry production heat recovery technology, and discloses a condensation water heat recovery system which comprises a steam condensation water collecting device, a heat exchanger, a raw material pump, an aromatic hydrocarbon device, a temperature sensor, a flow regulating valve and a control system. The steam condensation water collecting device is connected with the high-temperature fluid inlet through a high-temperature fluid inlet pipeline, the high-temperature fluid outlet is connected to the water return pipeline through a high-temperature fluid outlet pipeline, and the low-temperature fluid outlet is connected with the feeding pipeline through a low-temperature fluid outlet pipeline. The raw material pump is mounted on the feeding pipeline, the feeding pipeline is connected with a raw material storage tank, and the raw material pump is connected to the low-temperature fluid inlet through a low-temperature fluid inlet pipeline; the temperature sensors are respectively arranged at the low-temperature fluid inlet and the low-temperature fluid outlet; the flow regulating valve is installed on the high-temperature fluid inlet pipeline, and the high-temperature fluid inlet pipeline is further provided with a safety valve and a pressure sensor. And the control system is electrically connected with the temperature sensor, the flow regulating valve, the pressure sensor and the raw material pump.