阅读说明：本技术 一种制成异丁醇及高辛烷值汽油组分油的制备方法 (Method for preparing isobutanol and high-octane gasoline component oil ) 是由 赵鉴明 于 2020-11-24 设计创作，主要内容包括：本发明公开了一种制成异丁醇及高辛烷值汽油组分油的制备方法,包括如下原料组分的重量份制备而成：甲醇700重量份～970重量份、链增长剂10重量份～30重量份、石脑油30重量份～300重量份、催化剂分子筛1重量份～3重量份,通过甲醇、链增长剂、石脑油和催化剂分子筛之间反应制成异丁醇和汽油,减少了石油进口的问题,降低了使用成本,且甲醇是由煤制一氧化碳和氢气反应制成,减少了汽车尾气排放,解决了传统汽油制备方法采用原料MTBE具有致癌性的问题,不仅可以防止原料泄漏造成环境污染,提高了环境的质量,而且提高了制备的安全性,石脑油可以用天然气凝析油中分离出来的轻烃及煤焦油加氢的石脑油,原料来源广泛,降低了制备的成本。(The invention discloses a preparation method for preparing isobutanol and high-octane gasoline component oil, which comprises the following raw material components in parts by weight: 700-970 parts of methanol, 10-30 parts of chain extender, 30-300 parts of naphtha and 1-3 parts of catalyst molecular sieve, wherein the methanol, the chain extender, the naphtha and the catalyst molecular sieve are reacted to prepare the isobutanol and the gasoline, so that the problem of petroleum import is reduced, the use cost is reduced, the methanol is prepared by reacting carbon monoxide prepared from coal and hydrogen, the emission of automobile tail gas is reduced, the problem that MTBE used as a raw material in the traditional gasoline preparation method has carcinogenicity is solved, the environmental pollution caused by raw material leakage can be prevented, the environmental quality is improved, the preparation safety is improved, the naphtha can be light hydrocarbon separated from natural gas condensate oil and naphtha hydrogenated by coal tar, the raw material source is wide, and the preparation cost is reduced.)

1. A method for preparing isobutanol and high-octane gasoline component oil is characterized by comprising the following steps of: the methanol and naphtha are used as raw materials, and the prepared isobutanol and high-octane gasoline component oil comprise the following raw material components in parts by weight: 700 to 970 parts by weight of methanol, 10 to 30 parts by weight of a chain extender, 30 to 300 parts by weight of naphtha and 1 to 3 parts by weight of a catalyst molecular sieve.

2. The method of claim 1, wherein the method comprises the steps of: the methanol is coal-made absolute methanol with the content of 99.9 percent.

3. The method of claim 1, wherein the method comprises the steps of: the methanol is prepared by reacting carbon monoxide prepared from coal with hydrogen.

4. The method of claim 1, wherein the method comprises the steps of: the chain extender is a nano light-burned alkaline magnesium oxide.

5. The method of claim 1, wherein the method comprises the steps of: the naphtha is crude oil straight run naphtha.

6. The method of claim 4, wherein the method comprises the steps of: the naphtha can be light hydrocarbon separated from natural gas condensate and naphtha hydrogenated by coal tar.

7. The method of claim 1, wherein the method comprises the steps of: the catalyst molecular sieve is a ZSM-5 zeolite composite solid acid catalyst.

8. A method for preparing isobutanol and high-octane gasoline component oil is characterized by comprising the following steps of:

the first step is as follows: adding 1-3% of chain extender into methanol at normal temperature, stirring and mixing for 2 hours, standing and continuously reacting for 24 hours to prepare about 50% of isopropanol and isobutanol;

the second step is that: adding naphtha into the methanol mixed solution after the reaction of the chain extender, and uniformly mixing;

the third step: the mixed solution is heated to 90-100 ℃, isopropanol, isobutanol, isoparaffin, light aromatic hydrocarbon and high octane gasoline raw materials are prepared by a ZSM-5 catalyst fixed bed catalytic reaction, the isopropanol and the isobutanol are separated by a rectifying tower, and the high octane gasoline is remained.

Technical Field

The invention relates to the technical field of fine chemical engineering, in particular to a preparation method for preparing isobutanol and high-octane gasoline component oil.

Background

In recent years, the national attention on environmental protection gradually reduces the use of methyl tert-butyl ether in gasoline as a gasoline antiknock agent. Methyl tert-butyl ether (MTBE) has carcinogenicity, and after the MTBE is leaked out, the MTBE is mutually dissolved with underground water to pollute the underground water and cannot be degraded for decades, and MTBE is forbidden to be used in gasoline in the United states and some countries in Europe. The practical value of isobutanol as a gasoline antiknock agent for replacing MTBE and ethanol is multiplied. Meanwhile, isobutanol is an important chemical basic raw material and has high economic value. The development prospect is quite good. In 2020, the national methanol productivity is about 9500 ten thousand tons, and in 2019, the methanol is consumed all the year round and the energy production is more than 4000 ten thousand tons (1000 ten thousand tons are imported every year). If 4000 ten thousand tons of methanol are added with 1000 ten thousand tons of naphtha, 2000 ten thousand tons of isobutanol and 3000 ten thousand tons of national six 95# gasoline can be produced. Can pull the consumption of methanol in China, can reduce 15 percent of petroleum import every year, and is a cause benefiting the nation and the people.

Most of the existing petroleum is imported and has higher use cost, and in the existing gasoline preparation process, the raw material adopting MTBE has carcinogenicity in the preparation process, is easy to be mutually dissolved with underground water to pollute the environment after being leaked, reduces the quality of the environment and has low safety.

Aiming at the problems, the invention provides a preparation method for preparing isobutanol and high-octane gasoline component oil in order to reduce petroleum import, reduce use cost, prevent environmental pollution caused by leakage, improve environmental quality and improve preparation safety.

Disclosure of Invention

The invention aims to provide a preparation method for preparing isobutanol and high-octane gasoline component oil, which has the advantages of reducing the problem of petroleum import, reducing the use cost, preventing environmental pollution caused by leakage, improving the quality of the environment, improving the safety of preparation and solving the problems in the background art.

In order to achieve the purpose, the invention provides the following technical scheme: the preparation method for preparing isobutanol and high-octane gasoline component oil comprises the following steps of: 700 to 970 parts by weight of methanol, 10 to 30 parts by weight of a chain extender, 30 to 300 parts by weight of naphtha and 1 to 3 parts by weight of a catalyst molecular sieve.

Further, the methanol is coal-made absolute methanol with the content of 99.9 percent.

Further, the methanol is prepared by reacting carbon monoxide prepared from coal with hydrogen.

Further, the chain extender is a nano light-burned alkaline magnesium oxide.

Further, the naphtha is crude oil straight run naphtha.

Further, the naphtha can be light hydrocarbon separated from natural gas condensate and naphtha hydrogenated by coal tar.

Further, the catalyst molecular sieve is a ZSM-5 zeolite composite solid acid catalyst.

A preparation method for preparing isobutanol and high-octane gasoline component oil comprises the following steps:

the first step is as follows: adding 1-3% of chain extender into methanol at normal temperature, stirring and mixing for 2 hours, standing for continuous reaction for 24 hours, and partially converting into isopropanol and isobutanol;

the second step is that: adding naphtha into a methanol mixed solution modified by a chain extender in a reaction manner, and uniformly mixing;

the third step: heating the isopropanol, the isobutanol and the naphtha produced by the reaction to 90-100 ℃ to 0 ℃, and carrying out catalytic reaction on the isopropanol, the isobutanol, the light aromatic hydrocarbon and the isoparaffin by a ZSM-5 catalyst fixed bed to prepare the high-octane gasoline component. Isopropanol and isobutanol are separated out by a rectifying tower, and the rest is high octane gasoline.

Compared with the prior art, the invention has the following beneficial effects:

1. according to the preparation method for preparing isobutanol and high-octane gasoline component oil, isobutanol and gasoline components are prepared through reaction among methanol, a chain extender, naphtha and a catalyst molecular sieve, so that the problem of petroleum import is solved, the use cost is reduced, and the methanol is prepared through reaction of carbon monoxide prepared from coal and hydrogen, so that the automobile exhaust emission is reduced, and the cost of raw materials is reduced.

2. The preparation method for preparing isobutanol and high-octane gasoline component oil solves the problem that MTBE adopted in the traditional gasoline preparation method has carcinogenicity, can prevent environmental pollution caused by raw material leakage, improves the quality of the environment, and improves the safety of preparation.

3. According to the preparation method for preparing isobutanol and high-octane gasoline component oil, naphtha can be light hydrocarbon separated from natural gas condensate and naphtha hydrogenated by coal tar, the raw material source is wide, the limitation is small, and the preparation cost is reduced.

Detailed Description

The present invention will be further described with reference to the following examples, which are intended to be illustrative only and not to be limiting of the invention in any way, and any person skilled in the art can modify the present invention by applying the teachings disclosed above and applying them to equivalent embodiments with equivalent modifications. Any simple modification or equivalent changes made to the following embodiments according to the technical essence of the present invention, without departing from the technical spirit of the present invention, fall within the scope of the present invention.

In the examples, the raw materials are as follows:

methanol, a chain extender, naphtha and a catalyst molecular sieve.

Example 1

Raw materials of isobutanol and high-octane gasoline component oil: 700-970 parts of methanol, 10-30 parts of a chain extender, 30-300 parts of naphtha and 1-3 parts of a catalyst molecular sieve.

The method for preparing the isobutanol and the high-octane gasoline component oil comprises the following steps:

the first step is as follows: adding 1-3% of chain extender nano light-burned alkaline magnesium oxide into 99.9% of coal-made methanol at normal temperature, stirring and mixing for 2 hours, standing and continuously reacting for 24 hours, and partially reacting to obtain isopropanol and isobutanol.

The second step is that: adding naphtha which is obtained by straight distillation from crude oil with the distillation range of 70-170 ℃ and the octane number of about 60 into mixed liquid which is obtained by the reaction of light-burned alkaline magnesia extender and 99.9 percent coal-to-methanol, and heating to 90-100 ℃ to prepare mixed gas;

the third step: the mixed gas is reacted by molecular formula catalyst to produce the product containing isobutanol less than or equal to 10%, 67% light aromatic hydrocarbon and 15% isoparaffin.

Example 2

Raw materials of isobutanol and high-octane gasoline component oil: 800 parts of methanol, 30 parts of chain extender, 200 parts of naphtha and 2 parts of molecular sieve catalyst.

The first step is as follows: adding 1-3% of chain extender nano light-burned alkaline magnesium oxide into 99.9% of coal-made methanol at normal temperature, stirring and mixing for 2 hours, standing and continuously reacting for 24 hours, and partially preparing isopropanol and isobutanol;

the second step is that: adding hydrogenated naphtha into methanol mixed solution after reaction of nano light-burned alkaline magnesium oxide, and heating to 90-100 ℃ to prepare mixed gas;

the third step: the mixed gas is reacted by a ZSM-5 zeolite solid acid catalyst to obtain a product of 4.6 percent of isopropanol, 40 percent of isobutanol, 27 percent of light aromatic hydrocarbon and 22 percent of isoparaffin, and the yield of the product is 93.6 percent.

Example 3

Raw materials of isobutanol and high-octane gasoline component oil: 700 parts of methanol, 30 parts of chain extender, 300 parts of light hydrocarbon and 2 parts of molecular sieve catalyst.

The first step is as follows: adding 1-3% of chain extender nano light-burned alkaline magnesium oxide into 99.9% of coal-made methanol at normal temperature, stirring and mixing for 2 hours, standing and continuously reacting for 24 hours to prepare modified methanol containing part of isopropanol and isobutanol;

the second step is that: adding light hydrocarbon separated from natural gas condensate oil into a mixed solution of 99.9% coal-based methanol reacted by nanometer light-burned alkaline magnesium oxide, and heating to 90-100 ℃ to prepare a mixed gas;

the third step: the mixed gas is subjected to a ZSM-5 zeolite solid acid fixed bed catalytic reaction to prepare a product containing 4.6% of isopropanol, 45% of isobutanol and 47% of light aromatic hydrocarbon, isoparaffin and high-octane gasoline component oil, wherein the yield of the product is 96.6%.

Although the invention has been described in detail hereinabove by way of general description, specific embodiments and experiments, it will be apparent to those skilled in the art that many modifications and improvements can be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.