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Combined type dual-stage steam heat pump system

A heat pump system and combined technology, applied in the field of steam heat pump system, can solve the problem of not meeting the heat demand of the reboiler, and achieve the effects of saving high-quality energy consumption, reducing emissions, and reducing power consumption

Inactive Publication Date: 2017-02-22
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] For example, use a vapor compression high-temperature heat pump to extract heat from 80°C industrial wastewater to produce 130°C high-temperature hot water, but this obviously does not meet the heat demand of most reboilers

Method used

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  • Combined type dual-stage steam heat pump system

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Embodiment Construction

[0023] A combined two-stage steam heat pump system of the present invention will be described in detail below with reference to the embodiments and drawings.

[0024] A combined two-stage steam heat pump system of the present invention is composed of a steam compression heat pump and a jet heat pump. The steam compression heat pump in the front stage can increase the temperature of the heat source by about 50°C, and the jet heat pump in the back stage , with high-temperature and high-pressure superheated steam as working steam, the high-temperature water can be continuously raised to superheated steam with a saturation temperature of about 160°C. If this set of two-stage heat pump is used to recover waste heat in 80°C industrial waste water, it can produce water vapor with high saturation temperature suitable for industrial use.

[0025] Such as figure 1 As shown, a combined two-stage steam heat pump system of the present invention includes a reboiler 9 for heating materials,...

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Abstract

The invention discloses a combined type dual-stage steam heat pump system. The system comprises a reboiler for heating materials, a steam inlet of the reboiler is connected with an overheat steam exhaust of an ejection type heat pump, a steam production part of the ejection type heat pump is connected with a steam compression heat pump for exchanging heat with the steam production part. The combined type dual-stage steam heat pump system disclosed by the invention can recycle the heat in the industrial wastewater at 80 DEG C by use of high-temperature high-pressure steam as the power, and can produce the overheat steam with saturation temperature at 160 DEG C to be used by the reboiler.

Description

technical field [0001] The invention relates to a steam heat pump system. In particular, it relates to a combined two-stage steam heat pump system that recovers waste heat in the chemical industry and provides heating medium for the tower bottom reboiler in the industry. Background technique [0002] After on-site research and statistical analysis of many petrochemical enterprises, there are generally a large number of industrial waste heat above 80 °C in the petrochemical industry that needs to be cooled, and the cooling methods are mostly water-cooled or air-cooled. These cooling equipment consume a lot of power, and the tower in the production process The bottom reboiler needs water vapor with a saturation temperature of about 130-160°C to heat the material. However, there are few relevant studies on how to recover this part of waste heat to meet the requirements of the reboiler. At present, most of the waste heat of this grade is discarded, and the reboiler generally us...

Claims

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Application Information

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IPC IPC(8): F25B25/00F25B27/02
CPCY02A30/274F25B25/00F25B27/02
Inventor 张于峰周明月邓娜张彦王恒李晓琼
Owner TIANJIN UNIV
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