Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

High-pressure natural gas pressure energy refrigeration method for junked tire cryogenic pulverization

A technology for low-temperature crushing and waste tires, which is used in refrigerators, refrigeration and liquefaction, compressors, etc., can solve the problems of ice blockage, inability to meet the needs of producing fine rubber powder, and high temperature of cold energy when natural gas is cooled in pipelines. The effect of saving investment and operating costs, promoting recycling, and reducing operating costs

Active Publication Date: 2014-03-12
JINAN UNIVERSITY
View PDF12 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] In order to overcome the above-mentioned existing high-pressure natural gas pressure energy utilization method, the efficiency is low, the cooling of pipeline natural gas is easy to cause ice blockage, the temperature of cold energy is high, and the problems that cannot meet the needs of producing fine rubber powder, the purpose of the present invention The purpose is to provide a refrigeration method of high-pressure natural gas pressure energy for low-temperature crushing of waste tires. On the premise of preventing ice blockage of natural gas in pipelines, the pressure energy refrigeration of high-pressure natural gas is fully utilized to provide low-temperature crushing equipment for waste tires below -100°C. Cold energy of temperature, used in the production of fine rubber powder

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High-pressure natural gas pressure energy refrigeration method for junked tire cryogenic pulverization
  • High-pressure natural gas pressure energy refrigeration method for junked tire cryogenic pulverization
  • High-pressure natural gas pressure energy refrigeration method for junked tire cryogenic pulverization

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] A high-pressure natural gas pressure energy refrigeration method for low-temperature crushing of waste tires, the process flow is as follows figure 1As shown, two expanders are used to realize two-stage decompression of high-pressure natural gas, and nitrogen is selected as the refrigerant.

[0051] The pressure of high-pressure natural gas transported from the main natural gas pipeline network (high-pressure pipeline network) to the urban natural gas pressure regulating station is 4.0MPa (absolute pressure), the temperature is 15.0°C, and its volume composition is: methane 94.844%, ethane 2.353%, propane 0.309 %, butane 0.079%, pentane 0.042%, hexane 0.032%, nitrogen 1.656%, carbon dioxide 0.655%, water 0.03%; the water dew point of the pipeline transported natural gas at 4.0 MPa is 5.0 ℃, the water dew point at 0.5 MPa -15.0°C. In the natural gas pressure regulating station, the 4.0MPa high-pressure natural gas needs to be reduced to 0.5MPa before entering the urban ...

Embodiment 2

[0061] A high-pressure natural gas pressure energy refrigeration method for low-temperature crushing of waste tires, the process flow is as follows figure 2 As shown, an expander is used, and the refrigerant is nitrogen.

[0062] The pressure of the natural gas transported from the main natural gas pipeline network (high pressure pipeline network) to the urban natural gas pressure regulating station is 1.6MPa (absolute pressure), the temperature is 15.0°C, and its volume composition is: methane 94.844%, ethane 2.353%, propane 0.309% , butane 0.079%, pentane 0.042%, hexane 0.032%, nitrogen 1.656%, carbon dioxide 0.655%, water 0.03%; the water dew point of natural gas transported by this pipeline at 1.6MPa is -2.7℃, the water dew point at 0.5MPa -15.0°C. In the natural gas pressure regulating station, the 1.6MPa high-pressure natural gas needs to be reduced to 0.5MPa before entering the urban medium-pressure natural gas pipeline network (medium-pressure pipeline network). The ...

Embodiment 3

[0072] A high-pressure natural gas pressure energy refrigeration method for low-temperature crushing of waste tires, the process flow is as follows image 3 As shown, two expanders are used, and the refrigerant is air.

[0073] The pressure of the natural gas transported from the main natural gas pipeline network (high pressure pipeline network) to the urban natural gas pressure regulating station is 4.0MPa (absolute pressure), the temperature is 15.0°C, and its volume composition is: methane 94.844%, ethane 2.353%, propane 0.309% , butane 0.079%, pentane 0.042%, hexane 0.032%, nitrogen 1.656%, carbon dioxide 0.655%, water 0.03%; the water dew point of the pipeline transported natural gas at 4.0MPa is 5.0℃, and the water dew point at 0.5MPa is -15.0°C. In the natural gas pressure regulating station, the 4.0MPa high-pressure natural gas needs to be reduced to 0.5MPa before entering the urban medium-pressure natural gas pipeline network (medium-pressure pipeline network). The a...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a high-pressure natural gas pressure energy refrigeration method for junked tire cryogenic pulverization. The pressure energy of high-pressure natural gas is converted into mechanical work and cold energy through an expansion machine in a natural gas regulator station. The mechanical work and the cold energy are recycled through refrigerants, the mechanical work is used for compressing the refrigerants, the compressed high-pressure refrigerants are cooled through an optimally-designed heat exchange network through the cold energy generated through the expansion of the high-pressure natural gas, the gas inlet temperature of the high-pressure natural gas entering the expansion machine is improved, and the mechanical work generated by the expansion of the high-pressure natural gas is increased. The cooled high-pressure refrigerants are conveyed to a junked tire cryogenic pulverization area through a heat preservation pipeline, low-temperature cold energy below -100DEG C is generated by the high-pressure refrigerants through the refrigerant expansion machine, the mechanical work generated by the expansion of the high-pressure refrigerants is used for the primary pressure boost of the refrigerants with the cold energy used up, the refrigerants are conveyed back to the natural gas regulator station, and a refrigerating cycle is formed. The high-pressure natural gas pressure energy refrigeration method has the advantages of effectively utilizing energy and preventing ice blockage, and belongs to the field of natural gas pressure energy utilization.

Description

technical field [0001] The invention relates to the field of utilization of natural gas pressure energy, in particular to a high-pressure natural gas pressure energy refrigeration method for low-temperature crushing of waste tires. Background technique [0002] With the rapid development of the automobile industry, the annual output of tires in my country has exceeded 150 million, ranking third in the world after the United States and Japan. The annual production of waste tires has exceeded 100 million, and is growing at a double-digit rate every year. The accumulation of a large number of waste tires takes up land, which not only causes a waste of resources, but also because waste tires are thermosetting polymer materials, it is difficult to degrade, and the increasing "black pollution" has made our country's already fragile ecological environment worse. On the other hand, my country's rubber resources are very scarce, and rubber raw materials are mainly imported to meet th...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): F25B9/06F25B27/00
Inventor 熊永强
Owner JINAN UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com