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Solar energy and heat pump membrane distillation system

A solar heat pump and solar collector technology, applied in the field of membrane separation, can solve problems such as unstable operation, large heat loss, and low membrane flux, and achieve the effects of reduced operating costs, efficient recycling, and high system integration

Inactive Publication Date: 2019-11-26
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] Therefore, the current problem is that there is an urgent need to develop a solar heat pump membrane distillation system, which can solve the problems of high energy consumption, unstable operation, large heat loss and low membrane flux encountered in the prior art.

Method used

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  • Solar energy and heat pump membrane distillation system

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Embodiment

[0067]In a city in my country’s Type 3 sunshine area, under typical sunny weather conditions in summer, the outdoor ambient temperature is 29-36°C during the day and 25-29°C at night, and high salt water with a conductivity of 50,000μs / cm in a petrochemical enterprise is used as raw water , using the solar heat pump membrane distillation system of the present application for processing. Before starting the operation, the raw water is indirectly heated by the solar heat collector 15, and the solar heat pump membrane distillation system starts to operate when the raw water is heated to a temperature of 70°C. During operation, the heat pump is used to recover the latent heat of steam discharged from the steam of the membrane distillation unit and the heat source provided by the solar collector 15 is used to supplement the heat of the waste water to be treated in the constant temperature water tank 4, so that the temperature of the waste water to be treated is maintained at a predet...

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Abstract

The invention discloses a solar energy and heat pump membrane distillation system. The system comprises a constant-temperature water tank 4, a heat pump heat exchange unit, a solar energy heating unit, a membrane distillation unit, a produced water collection unit, and a chemical clean unit, wherein the solar energy heating unit heats a raw material liquid in the constant-temperature water tank 4by indirect heating. The solar energy and heat pump membrane distillation system provided by the invention improves the thermal energy utilization efficiency of membrane distillation, and has small heat loss, a small amount of cooling water, a higher membrane flux, stable operation and low operating costs.

Description

technical field [0001] The invention belongs to the technical field of membrane separation, in particular to the technical field of membrane distillation, and specifically relates to a solar heat pump membrane distillation system. Background technique [0002] Membrane distillation technology is a new type of membrane separation technology. This technology uses a hydrophobic porous membrane to separate the feed side (hot side) from the permeate side (cold side). Under the action of the vapor pressure difference on both sides of the membrane, the feed liquid The volatile components in the membrane pass through the membrane pores in the form of vapor, while the other components are blocked on the hot side by the hydrophobic membrane, so that the mixture can be purified or separated. Membrane distillation technology has a high desalination rate and good water quality. The concentration process is not limited by the osmotic pressure on both sides of the membrane, and the concent...

Claims

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Application Information

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IPC IPC(8): B01D61/36B01D65/02C02F1/44F24S10/70F24S23/71F24S60/30
CPCB01D61/364B01D61/366B01D65/02B01D2321/162B01D2321/164C02F1/447
Inventor 魏玉梅张新妙栾金义彭海珠
Owner CHINA PETROLEUM & CHEM CORP
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