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Normal pressure intermittent natural gas reforming process and device

A natural gas, intermittent technology, applied in the direction of sustainable manufacturing/processing, gas fuel, chemical industry, etc., can solve the problems of low energy conversion efficiency and high calorific value of reformed gas, so as to reduce calorific value, save energy and improve conversion efficiency effect

Inactive Publication Date: 2011-09-28
上海吴淞煤气制气有限公司
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Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide an atmospheric pressure intermittent natural gas reforming process and reforming device to solve the defect that the energy conversion efficiency in the use of city gas is too low due to the high calorific value of the reformed gas in the current natural gas reforming process

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  • Normal pressure intermittent natural gas reforming process and device
  • Normal pressure intermittent natural gas reforming process and device
  • Normal pressure intermittent natural gas reforming process and device

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with specific embodiments and accompanying drawings.

[0024] In order to improve the energy conversion efficiency of urban gas, the calorific value of the reformed gas needs to be reduced. One of the ways to reduce the calorific value is to increase a certain amount of waste gas, which can effectively reduce the calorific value of the reformed gas. And increasing the amount of waste gas can be obtained by adopting the following steps in the process flow:

[0025] 1. Increase the amount of small air

[0026] Entering a small amount of air (also called small air) at the bottom of the steam-accumulator during gas production can increase the temperature of the catalytic bed, and at the same time, the effect of small air can make the produced modified gas contain waste gas, reducing the calorific value of the modified gas. The amount of direct blending of natural gas has been increased.

[0027] 2. Add p...

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Abstract

The invention relates to a normal pressure intermittent natural gas reforming process and a normal pressure intermittent natural gas reforming device, and belongs to the field of reforming natural gas. The normal pressure intermittent natural gas reforming process is characterized in that: the gas-reforming process comprises the step of introducing a small amount of air from the bottom part of a steam accumulator of a two-barrel type natural gas reforming furnace; and by adding a small amount of air, the temperature of a catalytic bed is raised, a certain amount of waste gas is generated, and the heat value of the reforming gas is decreased. In the normal pressure intermittent natural gas reforming process and the device thereof, a small amount of air is added in the gas-reforming process to raise the temperature of the catalytic bed, and simultaneously under the action of the added air, the obtained finished product of reforming gas contains the generated waste gas, so that the heat value of the reforming gas is decreased; and when the flow rate of the natural gas to be processed is high, a lengthened open fire device is added, a small amount of air with a higher flow rate is added and reformed together with the natural gas after combustion and the amount of water gas in the reforming gas is increased under the condition of guaranteeing the quality of the reforming gas, so that the aim of decreasing the heat value of the reforming gas is achieved, the conversion efficiency of natural gas in cities is improved, and the energy is saved.

Description

[0001] technical field [0002] The invention relates to a reforming process of natural gas, in particular to a reforming process and a reforming device of atmospheric intermittent natural gas. [0003] Background technique [0004] In 2001, Shanghai Wusong Coal Gas Co., Ltd. imported and transformed the two-tube natural gas reforming furnace from the Onnia-Gage three-cylinder intermittent heavy oil cracking medium gas production furnace. The process of natural gas reforming is based on CH 4 High calorific value natural gas (40 MJ / M 3 ) undergoes water gas shift reaction with steam under high-temperature catalytic conditions to generate H 2 , CO as the main component of the low calorific value (11.7MJ / M 3 ) modified gas, the reaction is an endothermic reaction, in order to accumulate heat in the reforming process, it is produced by combustion during the heating process, and air is introduced during the heating process, and CH 4 Combustion, therefore, the atmospheric p...

Claims

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Application Information

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IPC IPC(8): C10L3/10C01B3/38C10L3/00
CPCY02P20/10Y02P20/52
Inventor 康劲松张罗周燕南
Owner 上海吴淞煤气制气有限公司
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