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Methanol-hydrocarbon method and device through ejecting circulation, fractional reaction and step-by-step adjustment

A methanol-to-hydrocarbon and reaction device technology, which is applied in the preparation of liquid hydrocarbon mixtures, hydrocarbon oil treatment, hydrocarbon oil treatment products, etc., can solve the problems of large investment in power equipment, large power consumption, and many types of by-products, so as to reduce equipment The effect of investment

Active Publication Date: 2016-08-24
潍坊弘润新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0023] Engineering practice and further research have found that the existing methods have many types of by-products, large power consumption, by-product treatment and large investment in power equipment.

Method used

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  • Methanol-hydrocarbon method and device through ejecting circulation, fractional reaction and step-by-step adjustment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] Embodiment 1: methanol gasoline

[0063] Gasoline is a mixture of hydrocarbons with carbon numbers ranging from C4 to C12, and it is allowed to contain an appropriate amount of alcohol ether ester components. Isoparaffin is a high-quality component, with high octane number of aromatics and relatively high octane number of olefins, but the content of aromatics in olefins is limited. Low-carbon hydrocarbons have high octane numbers but high vapor pressures, so they should be separated and converted. Long-chain alkanes have low octane numbers and should be separated and transformed. High-boiling aromatic components affect vehicle performance and should also be separated and transformed.

[0064] The advantage of the present invention is that through the step-by-step reaction and step-by-step adjustment method, the gasoline produced in the methanol-to-gasoline process contains more high-quality gasoline with high-quality components, and the by-product-free yield is reduce...

Embodiment 2

[0066] Embodiment 2: methanol diesel component

[0067] Diesel oil is a mixture of various hydrocarbons with carbon numbers ranging from C10 to C22, and it is allowed to contain an appropriate amount of alcohol ether ester components. Long-chain alkanes are high-quality components with high cetane number and high freezing point. Monocyclic long side chain aromatics and naphthenes have moderate cetane number and freezing point. Compared with the methanol-to-gasoline process, the post-reactor uses stacked catalysts.

[0068] The raw material methanol is boosted to 2.5-2.6 MPa by the methanol raw material pump 1 and divided into two paths, one path is used as the working fluid of the methanol injector 2; -200°C, the pressure is 2.3-2.4 MPa and then enters the pre-injector 5 as the working fluid to eject the part of the 300-400°C product at the outlet of the pre-reactor 4, then mix and heat up to 230-260°C, the pressure is 2.2-2.3 After MPa, it enters the pre-reactor 4 to react...

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Abstract

The invention relates to a method and a device of converting methanol to prepare hydrocarbon products. The method includes that a pre-reaction system, a main reaction system and a post-reaction system are used for fractional reaction in a three-stage reactor respectively, reaction parameters are adjusted step by step to lower yield of dry gas, liquefied gas and heavy gasoline, and a method of enabling the liquefied gas, heavy gasoline components and the dry gas to be in circulating reaction is adopted to produce the hydrocarbon products like high-quality gasoline and diesel. Through ejecting circulation, the objectives of lowering power consumption and lowering investment of a power system are achieved. The device is compact in structure, supportive of modularized mounting, low in investment, high in target product yield, energy-saving, environment-friendly and suitable for methanol plants, alcohol-ammonium co-producing fertilizer plants and methanol-co-producing coking plants on various scales to produce the hydrocarbon products like high-quality solvent oil, gasoline and diesel.

Description

technical field [0001] The invention belongs to a process method for preparing hydrocarbon products by converting methanol. Specifically, it refers to a process for producing liquid-phase hydrocarbon products such as gasoline or gasoline components, solvent oil, and diesel components using methanol or crude methanol as raw materials, and belongs to the field of coal chemical industry or natural gas chemical industry. Background technique [0002] Through appropriate catalytic processes, methanol can be converted into water and various hydrocarbon products such as olefins, alkanes, aromatics and mixtures of the above hydrocarbon products. Depending on the target product, the existing methanol-to-hydrocarbon processes include methanol-to-gasoline, methanol-to-olefins, and methanol-to-aromatics processes. [0003] Oil quality is an important factor affecting vehicle exhaust emissions. In recent years, smog has occurred frequently, and vehicle exhaust is considered to be an im...

Claims

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Application Information

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IPC IPC(8): C10G3/00
CPCY02P30/20C10G3/42C10G3/60C10G2400/02
Inventor 马延春
Owner 潍坊弘润新材料有限公司
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