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Process for co-producing synthesis gas and carbon fibers or carbon micro-spheres

A carbon fiber and carbon microsphere technology, which is applied in the field of co-production of syngas and carbon fiber or carbon microspheres, can solve the problems of by-product carbon deposition without economic value and poor catalyst stability, so as to facilitate industrial application and solve stable problems The effect of poor performance and stable methane conversion rate

Active Publication Date: 2018-03-16
NORTHWEST UNIV(CN)
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to propose a process for the co-production of syngas and carbon fiber or carbon microspheres. By regulating the operating conditions of the process, higher catalytic activity and stability are achieved, and the co-production of syngas and carbon fibers or carbon microspheres is achieved. Beneficial effects, effectively solving the problems of poor catalyst stability and by-product carbon deposition without economic value in the traditional process

Method used

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  • Process for co-producing synthesis gas and carbon fibers or carbon micro-spheres
  • Process for co-producing synthesis gas and carbon fibers or carbon micro-spheres
  • Process for co-producing synthesis gas and carbon fibers or carbon micro-spheres

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preparation example Construction

[0034] Catalyst preparation: according to the mass ratio of 1:(1~20), weigh the main catalyst component and the carbon-based material respectively, and load the main catalyst component on the carbon-based material or with the carbon-based material by traditional impregnation or mechanical mixing. The carbon-based material is mixed evenly to form the target catalyst;

[0035] Step 2, catalytic reaction process: under the action of the target catalyst, feed the gaseous raw material into the fixed bed or fluidized bed reactor, and control the reaction parameters as follows: the reaction pressure is normal pressure or micro positive pressure (less than 2kPa), the reaction temperature 750~950℃, reaction space velocity 5~100L / (g cat h), carrying out a constant temperature reaction for 1 to 10 hours in a fixed bed or fluidized bed reactor;

[0036] Step 3. Collection or separation of reaction products: the gas produced in step 2 is collected as synthesis gas; the catalyst reacted in s...

Embodiment 1

[0042] Step 1. Select high-purity methane and CO 2 As gas feedstock, control of methane and CO 2 The feed ratio (in terms of volume flow ratio) of the two is 15:1.

[0043] choose K 2 CO 3 (Analytical pure) as the main component of the catalyst, activated carbon (Gongyi Yuanjie Water Purification Material Co., Ltd., ground and sieved to 100-150 μm particles) as the carbon-based material, weighed and prepared according to the mass ratio of 1:1, and then passed The traditional dipping method will K 2 CO 3 Mix it with activated carbon evenly, dry it at 110°C and use it as the target catalyst.

[0044] Step 2. Under the action of the target catalyst, feed the gaseous raw material into the fixed-bed reactor, and control the reaction parameters as follows: the reaction pressure is normal pressure, the reaction temperature is 850°C, and the reaction space velocity is 15L / (g cat · h), carry out the constant temperature reaction of 5h in the traditional fixed-bed reactor.

[004...

Embodiment 2

[0048] The difference from Example 1 is that K in Step 1 of Example 1 2 CO 3 (analytical pure) replaced by Na 2 CO 3 (Analytical pure) as the main component of the catalyst, replace activated carbon with coal pyrolysis semi-coke (big semi-coke from Shenmu County Wuzhou Coal Chemical Co., Ltd., ground and screened to 100-150 μm particles) as carbon-based materials, and other contents are the same as The content of Embodiment 1 is the same, and the effect similar to that of Embodiment 1 can also be achieved.

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Abstract

A process for co-producing synthesis gas and carbon fibers or carbon micro-spheres includes the steps: loading main components of catalysts onto carbon-based materials or uniformly mixing the main components with the carbon-based materials according to the mass ratio of 1:(1-20) to form target catalysts; leading raw gas into a fixed bed or fluidized bed reactor under the action of the target catalysts, and performing thermostatic reaction in the fixed bed or fluidized bed reactor; collecting gas generated in the reaction process to obtain synthesis gas; sequentially washing and drying the reacted catalysts to obtain the carbon fibers or carbon micro-spheres. The raw gas comprises methane and CO2, and the process has the advantages that high catalytic activity and stability can be realized,and the synthesis gas and the carbon fibers or carbon micro-spheres are co-produced. The catalysts are simple in design, low in investment cost and convenient to industrially apply.

Description

technical field [0001] The invention belongs to the field of natural gas chemical industry or conversion and processing of low-carbon resources, and specifically relates to a process for co-producing synthesis gas and carbon fiber or carbon microspheres. Background technique [0002] Methane is a small molecular hydrocarbon with a relatively simple structure. It widely exists in natural gas, biogas, oil field gas, and coal mine pit gas. It is also an important component of shale gas and coke oven gas. Methane is a high-quality gaseous fuel and an important raw material for the production of synthesis gas and many chemical products. [0003] Methane dry reforming (CH 4 +CO 2 →2CO+2H 2 ) technology can be used in a variety of carbon-chemical utilization technology processes using synthesis gas as raw material, such as coke oven gas to reduce iron, coke oven gas to methanol, Fischer-Tropsch Oxygenates, CO 2 Emission reduction and high-value utilization, etc. According to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B3/40C01B32/05
CPCC01B3/40C01P2004/03C01P2004/10C01P2004/32C01P2006/80Y02P20/52
Inventor 张建波司晓璐任梦园王梦凡唐河兵马晓迅
Owner NORTHWEST UNIV(CN)