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Device and method for recovering waste heat and generating electricity in a hydrogen pressurized bed in liquefied substances

A waste heat power generation and hydrogen technology, which is applied in steam engine installations, machines/engines, mechanical equipment, etc., can solve problems such as environmental pollution, adverse economic and social development, and increase production costs of enterprises, and achieve the effect of improving economic benefits.

Active Publication Date: 2021-02-26
SHANGHAI KELAIPU ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, at least half of the heat in industrial production is directly discharged into the atmosphere in various forms of waste heat. These discharged and unused heat not only increase the production cost of the enterprise, but also cause serious pollution to the environment, which is not conducive to the economy. healthy development of society

Method used

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  • Device and method for recovering waste heat and generating electricity in a hydrogen pressurized bed in liquefied substances
  • Device and method for recovering waste heat and generating electricity in a hydrogen pressurized bed in liquefied substances

Examples

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Embodiment 1

[0029] The device for recovering waste heat power generation by a hydrogen pressurized bed in liquefied chemicals of the present invention includes a high-temperature waste heat gas pipeline, a low-temperature waste heat gas pipeline, an expander 2, a generator 7, a mixed gasifier 1, a booster bed 3, and a throttling The expansion separator 4 and the liquid pump 5 are coaxially connected with the expander and the generator. The throttling expansion separator is provided with a mixed gas inlet, a hydrogen outlet and a liquid outlet, and the hydrogen outlet is provided with a hydrogen filter membrane 6 . The pressurized bed is provided with a low temperature and low pressure hydrogen inlet 54 , a high temperature and high pressure hydrogen outlet 53 , a high temperature waste heat gas inlet 47 and a waste heat gas outlet 50 . The mixed gasifier is provided with a hydrogen inlet, a liquid inlet and a mixed gas outlet. The heat exchanger is provided with a waste heat gas inlet, a...

Embodiment 2

[0048] The working fluid mixed with hydrogen in this embodiment is nitrogen. Use high-temperature waste heat to heat the pressurized bed 3 to release hydrogen to produce high-pressure hydrogen at 200°C and 3.5MPa; the high-pressure hydrogen is sent to the mixed gasifier 1, and comes to the throttling expansion separator 4 and is pressurized by a liquid pump The -196℃, 3.5MPa liquid nitrogen is mixed, the low-temperature liquid nitrogen is heated and vaporized by the high-pressure hydrogen in the mixed gasifier and the temperature is raised to -95°C, and the high-pressure hydrogen is cooled to -95°C; the mixed gasifier produces - The mixed gas of high-pressure hydrogen and nitrogen at 95°C and 3.5MPa enters the expander 7 to expand and perform work. After expanding to 0.4MPa and -177°C, the mixed gas of low-pressure hydrogen and nitrogen enters the throttling expansion separator 4; In the container, the low-pressure mixed gas is further expanded to 0.15MPa for refrigeration, so...

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Abstract

The invention relates to a device and method for recovering waste heat and generating electricity by a booster bed of hydrogen in liquefied chemicals. The device includes an expander, a generator, a mixed gasifier, a booster bed, a heat exchanger and a throttling expansion separator. The hydrogen outlet of the throttling expansion separator is connected to the boosted bed, and the boosted bed is connected to the mixed gasifier. The throttling expansion separator is connected to the hybrid gasifier through a liquid pump and a heat exchanger, and the outlet of the hybrid gasifier is connected to the inlet of the throttling expansion separator through an expander. The high-temperature waste heat gas pipeline is connected to the high-temperature waste heat gas inlet of the booster bed, and the waste heat gas outlet of the booster bed is connected to the heat exchanger through the low-temperature waste heat gas pipeline. The heated mixture of hydrogen and working medium enters the expander to expand and do work, driving the generator to generate electricity, and the hydrogen and working medium are recycled. The invention makes full use of the waste heat of industrial waste gas to generate certain pressure of hydrogen and working gas to drive the expander to do work to drive the generator to generate electricity, which is beneficial to energy saving and emission reduction, and improves economic benefits.

Description

technical field [0001] The invention belongs to the technical field of waste heat recovery, and relates to a method and a device for recovering waste heat and generating electricity in a hydrogen pressurized bed in liquefied chemicals. Background technique [0002] Energy is an important material basis for the survival and development of human beings. Under the background of rapid industrial development, rising energy consumption on a global scale, energy shortage and intensified greenhouse effect, the development of a low-carbon, environmentally friendly and environment-friendly economy has become an inevitable choice. . Energy conservation and emission reduction, and the development and utilization of new energy-saving technologies are regarded as the "fifth conventional energy source" after coal, oil, natural gas, and hydropower. tension, to achieve sustainable development, and ultimately achieve the coordinated development of resources, environment, economy, and society...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01K13/00F01K7/00F01K25/10F01K27/00
CPCF01K7/00F01K13/00F01K25/10F01K27/00
Inventor 贾鹏
Owner SHANGHAI KELAIPU ENERGY TECH CO LTD