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Steam heat pump and low-pressure steam enthalpy boost utilization method

A low-pressure steam and steam technology, used in heat pumps, steam superheating, pumps, etc., can solve the problems of low utilization rate of secondary steam and high energy consumption, and achieve small enthalpy difference, high liquid injection booster, and less superheating enthalpy. Effect

Active Publication Date: 2019-06-18
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The steam injection heat pump uses high-pressure raw steam to expand the Laval nozzle (nozzle) of the steam injector to generate supersonic flow, convert the pressure energy and phase change energy into the kinetic energy of the jet, and inject secondary steam or low-pressure steam. The use of supercharging, the pressure of mixed steam after supercharging is lower than that of raw steam; since the ejection coefficient generally does not exceed 1, the utilization rate of secondary steam or low-pressure steam is very low, and the energy consumption is high, so far it is rarely used

Method used

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  • Steam heat pump and low-pressure steam enthalpy boost utilization method
  • Steam heat pump and low-pressure steam enthalpy boost utilization method
  • Steam heat pump and low-pressure steam enthalpy boost utilization method

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Effect test

Embodiment 1

[0138] Such as figure 2 As shown, the method for utilizing low-pressure steam to supplement enthalpy and pressurize uses a steam heat pump, and the steam heat pump includes a material heater 1 and a superheated liquid injection supercharger 2, and the superheated liquid injection supercharger 2 is integrated The material heater 1 is an evaporator, and the evaporator has an evaporation chamber 12 and a heating chamber 11; The inlets 15 are connected sequentially.

[0139] Including the following steps:

[0140] 1) The secondary steam discharged from the secondary steam outlet 18 of the evaporation chamber 12 passes through the thermal liquid injection supercharger 2, so that the secondary steam is heated and superheated to become superheated steam whose temperature exceeds the target pressure saturated steam temperature.

[0141] 2) Utilize the saturated steam in the heating chamber 11 of the evaporator to heat the strong suction force generated by the rapid volume reduction...

Embodiment 2

[0143] Such as Figure 5 As shown, the method for utilizing low-pressure steam to supplement enthalpy and pressurize uses a steam heat pump, and the steam heat pump includes a material heater 1 and a superheated liquid injection supercharger 2, and the material heater 1 is an evaporator. Superheated liquid injection supercharger 2 comprises superheater 21, liquid injection supercharger 22; Described evaporator has evaporation chamber 12 and heating chamber 11; The secondary steam outlet 18 of described evaporation chamber 12, superheater 21, liquid injection The supercharger 22 and the saturated steam inlet 15 of the heating chamber 11 are sequentially connected;

[0144] Also includes the following steps:

[0145] 1) The secondary steam discharged from the secondary steam outlet 18 of the evaporation chamber 12 is passed through the superheater 21 to become superheated steam whose temperature exceeds the target pressure saturated steam temperature;

[0146] 2) Utilize the s...

Embodiment 3

[0149] Such as figure 2 Shown, the method for secondary steam enthalpy replenishment and supercharging recycling of the present invention adopts a steam heat pump to be a tornado steam heat pump, comprising an evaporator, a tornado superheated liquid injection supercharger (a tornado superheat, a liquid injection pressurization combined One-piece type), the evaporator has an evaporation chamber 12 and a heating chamber 11; the secondary steam outlet 18 of the evaporation chamber 12, the tornado superheated liquid injection supercharger, and the saturated steam inlet 15 of the heating chamber 11 are connected in sequence; The tornado superheated liquid injection supercharger can make the steam form a tornado vortex, that is, a tornado.

[0150] Include the following steps:

[0151] 1) The secondary steam discharged from the secondary steam outlet 18 of the evaporation chamber 12 is sent to the superheated liquid injection supercharger of the tornado; through the superheated l...

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Abstract

The invention discloses a high-efficiency steam heat pump and a method for utilizing low-pressure steam with enthalpy supplementation and supercharging. The method for using low-pressure steam to supplement enthalpy and pressurize includes the steps of heating the low-pressure steam to become superheated steam to supplement enthalpy, and then using the supercharged saturated steam to generate a strong suction caused by a sharp reduction in volume when the material itself is condensed by the material heater, Inhale superheated steam for liquid injection pressurization, so that the saturated steam that forms pressurization can be utilized. Further, learn from the principle of natural tornado formation and strong suction; through the use of tornado superheater and tornado liquid spray supercharger; make the steam form an artificial tornado in the corresponding equipment, thereby enhancing the steam condensation suction and improving thermal efficiency and compression ratio. The steam heat pump, especially the tornado steam heat pump, has high efficiency, low energy consumption, low cost, and environmental protection due to the small enthalpy difference between the low-pressure steam and the supercharged saturated steam, less enthalpy supplemented by superheating, and high pressurization by liquid injection. The use of low-carbon technology has created green energy, which has a wide range of applications.

Description

technical field [0001] The invention relates to the field of steam heat pumps, in particular to a steam heat pump and a method for utilizing low-pressure steam with enthalpy supplementation and supercharging. Background technique [0002] As we all know: the use of low-pressure steam or secondary steam is a major issue in today's green, low-carbon economy (carbon dioxide emission reduction) and circular economy. [0003] However, during the evaporation process, due to the rising boiling point, the temperature of the secondary vapor produced by evaporation is always lower than the liquid temperature, which poses a technical problem for the energy-saving utilization of the secondary vapor. [0004] In the prior art, the following methods are generally adopted to realize the energy-saving utilization of steam. [0005] 1. Multi-effect evaporation [0006] Taking water vapor as an example, in principle, a multi-effect evaporator uses the latent heat of vaporization of raw stea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F22G1/00F25B30/00
CPCF22G1/005F25B30/00F25B1/06F01K3/26F04F5/42F04F5/16
Inventor 李赛傅皓傅朝清
Owner SICHUAN UNIV