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Skid-mounted device and technology for producing methane from lower hydrocarbons

A low-carbon hydrocarbon, skid-mounted technology, applied in the direction of hydrocarbon production from carbon oxides, chemical industry, hydrocarbons, etc., can solve the problems of high methane cost and low production efficiency

Inactive Publication Date: 2017-07-14
CHINA UNIV OF PETROLEUM (BEIJING) +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the problems of high methane production cost, low production efficiency, and peak regulation in the prior art, the object of the present invention is to provide a skid-mounted device and process for producing methane from low-carbon hydrocarbons. Small size, easy to move, etc. At the same time, the process of the present invention has high production efficiency, high methane conversion rate, flexible and convenient use, and is suitable for use as a distributed energy source, or complementary to other methane production processes, and used in cities and towns that do not have natural gas pipelines , or complementary with biological fermentation to solve scattered urban energy problems, etc.

Method used

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  • Skid-mounted device and technology for producing methane from lower hydrocarbons
  • Skid-mounted device and technology for producing methane from lower hydrocarbons

Examples

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Embodiment 1

[0059] This embodiment provides a device for producing methane from skid-mounted low-carbon hydrocarbons, such as figure 1 As shown, the device for producing methane from skid-mounted low-carbon hydrocarbons includes a first feed pump 1, a second feed pump 2, a fine desulfurization reactor 3, a heating furnace 4, a hydrocarbon-water conversion reactor 5, a first replacement Heater 6, deep methanation reactor 7, second heat exchanger 8, gas-liquid separator 9, membrane separator 10 and methane storage tank 11;

[0060] The first feed pump 1 is connected with the fine desulfurization reactor 3, the fine desulfurization reactor 3 is connected with the heating furnace 4, the second feed pump 2 is connected with the heating furnace 4, and the heating furnace 4 is connected with the hydrocarbon-water conversion reactor 5 are connected, the hydrocarbon-water conversion reactor 5 is connected with the first heat exchanger 6, the first heat exchanger 6 is connected with the deep methan...

Embodiment 2

[0074] This embodiment provides a process for producing methane from low-carbon hydrocarbons, which is carried out by using the skid-mounted device for producing methane from low-carbon hydrocarbons provided in Example 1. In this embodiment, the low-carbon hydrocarbons are liquefied petroleum gas. The process includes the following step:

[0075] Step 1, the liquefied petroleum gas is transported to the desulfurizer bed inside the fine desulfurization reactor 3 through the first feed pump 1 according to the mass flow rate of 820kg / h for desulfurization treatment. After the desulfurization treatment, the total sulfur content in the liquefied petroleum gas From 55.9ppm to 0.8ppm;

[0076] Step 2, the desulfurized liquefied petroleum gas is mixed with the water delivered by the second feed pump 2 and sent to the heating furnace 4 for heating. The feed flow rate of water is 1000kg / h, and the feed pressure of the mixture is controlled. is 1MPa, the mixture heated to 370°C is trans...

Embodiment 3

[0081] This embodiment provides a process for producing methane from low-carbon hydrocarbons, which is carried out by using the skid-mounted device for producing methane from low-carbon hydrocarbons provided in Example 1. The low-carbon hydrocarbons in this embodiment are oilfield gas, and the process includes the following steps :

[0082] Step 1, a certain oilfield gas is transported to the desulfurizer bed inside the fine desulfurization reactor 3 through the first feed pump 1 according to the mass flow rate of 1000kg / h for desulfurization treatment. After the desulfurization treatment, the total sulfur content in the oilfield gas is from 30ppm down to 0.7ppm;

[0083] Step 2, the desulfurized oilfield gas is mixed with the water delivered by the second feed pump 2 and sent to the heating furnace 4 for heating. The feed flow rate of water is 2000kg / h, and the feed pressure of the mixture is controlled as 3MPa, the mixture heated to 350°C is transported to the conversion ca...

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Abstract

The invention provides a skid-mounted device and technology for producing methane from lower hydrocarbons. The skid-mounted device comprises a first feed pump, a second feed pump, a fine desulfurization reactor, a heating furnace, a hydrocarbon-water conversion reactor, a deep methanation reactor, a gas liquid separator, and a membrane separator. The provided skid-mounted device has the characteristics that the raw materials are easy to store, the device volume is small, and the device is easy to move. The device is easy for modularization, is suitable for skid-mounted design, and is easy for design, manufacturing, and commercial application. At the same time, the technology of using the device to produce methane from lower hydrocarbons has the advantages of high production efficiency, high methane conversion rate 97% or above, and high calorific value of products, can produce methane according to the needs, is user-friendly, and is suitable for distributed energy and peak load regulation. The production technology and the biological fermentation are complementary. The methane can be used in areas which are not convenient for pipeline transportation and need clean energy.

Description

technical field [0001] The invention belongs to the field of methane production technology, and in particular relates to a skid-mounted low-carbon hydrocarbon production methane device and technology. Background technique [0002] China is severely smoggy, and replacing coal with natural gas is an important solution. However, China lacks a natural gas pipeline network. In the absence of a pipeline network, the problems of natural gas supply and peak regulation need to be solved urgently, especially in remote towns. [0003] Methane is a clean energy source and a high-quality chemical raw material, which is widely used in the fields of energy and chemical industry. In 2015, my country's methane-based natural gas consumption has reached 197.3 billion cubic meters, and it has maintained steady growth for many years. The demand for methane-based clean fuels is large. [0004] There are many methods and ways to produce methane. Industrial methane production mainly includes: (1)...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C1/04C07C1/12C07C9/04
CPCC07C1/041C07C1/0435C07C1/12C07C2523/755C07C2523/83C07C9/04Y02P20/10
Inventor 余长春张松林周红军
Owner CHINA UNIV OF PETROLEUM (BEIJING)