Process of synthesizing gasoline and coproducting aromatic hydrocarbon by synthetic gas

A technology for synthesis gas and gasoline, used in the petroleum industry, hydrocarbon production from carbon oxides, and recovery of liquid hydrocarbon mixtures, etc., can solve the problems of easy catalyst deactivation, methanol catalyst sintering, and poor heat transfer effect in fixed beds.

Inactive Publication Date: 2007-08-15
SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The one-stage catalyst has the disadvantage of being easily deactivated, and the heat transfer effect of the fixed bed is not good, which can easily cause the sintering of the methanol catalyst; the dehydration of methanol to generate dimethyl ether is a strong exothermic reaction, and the fixed bed reactor must be multi-stage, which will inevitably cause Increased investment in equipment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The DC207 methanol synthesis catalyst produced by Linqu Daxiang Fine Chemical Co., Ltd. and the γ-Al catalyst produced by Changling Oil Refining and Chemical Co., Ltd. 2 o 3 Methanol dehydration catalysts are mixed at a weight ratio of 5:1 and loaded into a slurry bed reactor; the ZSM-5 catalyst produced by Beijing Bowen Kefeng Technology Development Co., Ltd. is crushed to 20-30 mesh and loaded into a fixed bed reactor. Under normal pressure, 7% (volume ratio) of dilute hydrogen (H 2 / N 2 ) Carry out temperature-programmed reduction of the catalyst in the slurry bed, the reduction procedure is: heating up from room temperature to 120°C at a heating rate of 3°C / min, and keeping the temperature constant for 2 hours; then heating up from 120°C to 180°C at a heating rate of 1°C / min , keep the temperature for 3 hours; then raise the temperature from 180°C to 260°C at a rate of 3°C / min, and keep the temperature for 2 hours. The reduction tail gas passes through the fixed ...

Embodiment 2

[0020] The DC207 methanol synthesis catalyst produced by Linqu Daxiang Fine Chemical Co., Ltd. and the γ-Al produced by Zibo Dongchangye Alumina Co., Ltd. were crushed below 250 mesh 2 o 3 Methanol dehydration catalysts are mixed at a weight ratio of 4:1 and loaded into a slurry bed reactor; the ZSM-5 catalyst produced by Shandong Qilu Huaxin Industrial Co., Ltd. is crushed to 30-40 mesh and loaded into a fixed bed reactor. Under normal pressure, 20% (volume ratio) of dilute hydrogen (H 2 / N 2 ) carry out temperature-programmed reduction on the catalyst in the slurry bed, and the reduction program is: heat up from room temperature to 110°C with a temperature rise rate of 6°C / min, and keep the temperature constant for 3 hours; then heat up from 110°C to 180°C with a temperature rise rate of 3°C / min , keep the temperature for 5 hours; then raise the temperature from 180°C to 250°C at a heating rate of 3°C / min, and keep the temperature for 5 hours. The reduction tail gas passe...

Embodiment 3

[0024] Mix the DC207 methanol synthesis catalyst produced by Linqu Daxiang Fine Chemical Co., Ltd. and the HX001 methanol dehydration catalyst produced by Pingxiang Xingchen Industry Co., Ltd. with a weight ratio of 2:1, and put them into the slurry bed reactor. ; The NKF-5 molecular sieve catalyst produced by Nankai University Catalyst Factory is crushed to 30-40 mesh and loaded into a fixed-bed reactor. Under normal pressure, 10% (volume ratio) of dilute hydrogen (H 2 / N 2) carry out temperature-programmed reduction on the catalyst in the slurry bed, and the reduction program is: heat up from room temperature to 120°C at a heating rate of 5°C / min, and keep the temperature constant for 3 hours; then raise the temperature from 120°C to 170°C at a heating rate of 2°C / min , keep the temperature for 3 hours; then raise the temperature from 170°C to 250°C at a rate of 3°C / min, and keep the temperature for 3 hours. The reduction tail gas passes through the fixed bed catalyst to p...

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PUM

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Abstract

The invention discloses a synthetic craft of petrol co generating aromatic hydrocarbons with synthesis gas, which comprises the following steps: mixing methanol synthesis and methanol-watering activator; loading into plasm-stating bed reactor; loading ZSM-5 activator into fixed bed reactor at normal pressure; leading into diluting hydrogen gas (H2/N2); proceeding programmed temperature deacidize for activator in plasm-stating bed; getting tail gas; proceeding preheat for fixed bed activator with the tail gas; leading synthesis gas with H2/CO at 1-5 : 1 into plasm-stating bed after finishing reduction under 3.0-7.0MPa; controlling reacting temperature at 260-300 deg.c and gas space velocity at 30000-120000h-1; making the reacting product enter into fixed bed with equal pressure; setting the reacting temperature at 300-400 deg.c and gas space velocity at 10000-40000h-1; proceeding synthetic reacting. This invention possesses merits of big gas speed, good heat diffusion and minor equipment investment.

Description

technical field [0001] The invention relates to a process for synthesizing gasoline and co-producing aromatics, in particular to a process for synthesizing high-quality gasoline and co-producing aromatics from synthesis gas through methanol and dimethyl ether. Background technique [0002] The direct conversion of syngas to gasoline is an important way to develop alternative energy sources. The oil synthesized from syngas through the F-T process has a wide carbon number distribution, contains straight-chain aliphatic hydrocarbons, oxygenated compounds and a small amount of aromatics, and has a very low octane number, so it cannot be used as motor gasoline without reforming. However, the gasoline synthesized by the process of methanol and dimethyl ether has a low carbon number, C 5 -C 11 Accounting for 70%, (the content of isomeric hydrocarbons reaches more than 35%). Therefore, the gasoline synthesized by this kind of process can reach 95 octane number without treatment, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G5/00C07C1/04C07C15/00
Inventor 谭猗生解红娟韩怡卓李文怀
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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