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Dealkylation method for carbon dioxide containing hydrocarbon impurities

A carbon dioxide and hydrocarbon removal technology, applied in chemical instruments and methods, inorganic chemistry, carbon compounds, etc., can solve the problems of wasting energy, increasing costs, and not being able to completely remove hydrocarbons, so as to reduce energy consumption, reduce heating energy consumption, The effect of reducing subsequent consumption

Active Publication Date: 2020-01-14
杭州快凯高效节能新技术有限公司
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Problems solved by technology

Due to the high activation temperature of the catalyst, a large amount of heat energy is required to heat the feed gas. The larger the gas volume, the greater the energy required for heating, and most of this energy is used to heat the components in the feed gas that do not participate in the reaction: carbon dioxide , which wastes a lot of energy, thus increasing the cost, and cannot guarantee complete hydrocarbon removal

Method used

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  • Dealkylation method for carbon dioxide containing hydrocarbon impurities
  • Dealkylation method for carbon dioxide containing hydrocarbon impurities
  • Dealkylation method for carbon dioxide containing hydrocarbon impurities

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Embodiment Construction

[0035] Such as Figure 1 to Figure 6 Shown, be a kind of method for the dehydrocarbonation of carbon dioxide containing hydrocarbon impurity of the present invention, comprise the steps:

[0036] (a) Preheating the raw material gas: the carbon dioxide raw material gas first enters the coiled pipe preheater 1 for preheating, then enters the dehydrocarbon electric heater 2 for heating, and then enters the bottom of the dehydrocarbon reaction tower 3 after heating, so that the carbon dioxide raw material The temperature of the gas is raised to meet the requirements of the dehydrocarbonation reaction temperature. The outer wall of the dehydrogenation electric heater 2 is provided with an electric heating cable 4, and the electric heating cable 4 plays the role of heat compensation, so as to keep the heating temperature within the set range, automatic adjustment, energy saving and convenience.

[0037] The dehydrogenation reaction tower 3 is respectively provided with a coiled hea...

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Abstract

The invention discloses a dealkylation method for carbon dioxide containing hydrocarbon impurities. The dealkylation method comprises the following steps: (a) preheating of feed gas; (b) a dealkylation reaction; (c) heat exchanging; (d) cooling; and (e) secondary impurity removal. The method is simple in process, convenient to operate, small in heat loss and high in heat utilization rate; and compared with a traditional dealkylation system, used dealkylation equipment is small in occupied area, low in cost, high in economic benefit, capable of realizing secondary dealkylation and good in dealkylation effect, and guarantees the purity of carbon dioxide.

Description

technical field [0001] The invention belongs to the technical field of carbon dioxide dehydrocarbonation, in particular to a method for dehydrocarbonation of carbon dioxide containing hydrocarbon impurities. Background technique [0002] Synthetic ammonia, ethylene glycol, coal gas and other devices can discharge industrial waste gas containing carbon dioxide. These waste gases contain various hydrocarbon impurities such as methane, ethane, propane, etc. These impurities can be removed by catalytic combustion, and then further processed Purification removes other impurities, and food-grade carbon dioxide can be obtained for utilization. [0003] In the prior art, catalytic combustion is used to remove hydrocarbons, and various hydrocarbons are converted into water and carbon dioxide in the presence of supplemental oxygen and a catalyst. Due to the high activation temperature of the catalyst, a large amount of heat energy is required to heat the feed gas. The larger the gas ...

Claims

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Application Information

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IPC IPC(8): C01B32/50
CPCC01B32/50
Inventor 张立群沈建冲许永花
Owner 杭州快凯高效节能新技术有限公司
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