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Method for preparing automobile fuel oil by straw chemical process

A chemical method and straw technology, applied in the field of straw production of fuel oil for automobiles, can solve the problems of many people, increased energy consumption, and lack of material components, and achieve the effects of improving the working environment, reducing labor intensity, and improving combustion performance

Inactive Publication Date: 2012-05-23
谢新佑 +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 1. Using methanol or water to soak the solid material will consume a lot of methanol or produce a lot of acid-containing wastewater
Both water treatment and acid recovery consume a lot of energy. In order to prevent too much water from entering the subsequent reaction, a pressing and drying process is set up, which increases energy consumption.
The recovery of dilute acid consumes energy and chemical reagents
Moreover, the solid material is soaked until no free acid exists, and after being pressed dry, it is reacted with ethylene oxide or propylene oxide and then etherified with methanol. This preparation method has a slow reaction speed and a low conversion rate.
[0007] 2. It is not conducive to the realization of continuous mass production
A series of processes from the initial process of straw drying and impurity removal to the final dissolution with an organic solvent with a boiling point of ≤150°C are the handling and transportation of solid-liquid mixtures, which cannot realize the fluidization and pipelineization of chemical production. , the scale of production will not increase
Too many people, heavy physical labor, poor working environment
[0008] 3. 20%-40% of raw materials - low-carbon alcohol ether waste liquid is based on waste liquid from chemical plants, pharmaceutical plants, and pesticide plants. If large-scale production occurs, the quantity and quality of raw material sources are not reliable. Moreover, the low-carbon alcohol ether waste liquid has neither a specific production method nor a specific material composition, and it cannot be realized

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Embodiment 1 comprises the following steps:

[0038] 1. Impurity removal and drying: 20 kg of corn stalks without impurities with a moisture content of <9% are put into the nitrification reactor;

[0039] 2. Nitrification: evenly pour 36 kg of 98% nitric acid into the reactor, seal it, and nitrify it at room temperature for 24 hours, and control the nitrogen content of the nitrate to be 9% of the dry corn stalk weight;

[0040] 3. Dissolution: evenly pour 40 kg of methanol into the reactor, and dissolve for 8 hours under stirring at room temperature;

[0041] 4. Neutralization: The solution is pumped into the neutralization tank, and liquid ammonia is slowly added under stirring until the pH value reaches 7, and then pumped into the etherification tank to remove impurities such as ammonium nitrate crystals;

[0042] 5. Etherification: Slowly feed ethylene oxide at room temperature, react for 6 hours, and pump into the decolorization tank after etherification is complete;...

Embodiment 2

[0054] Embodiment 2 comprises the following steps:

[0055] 1. Impurity removal and drying: 20 kg of impurity-free thatch and sorghum stalks with a moisture content of <10% are put into the nitrification reactor.

[0056] 2. Nitrification: Evenly pour 20 kg of 98% nitric acid and 6 kg of 98% sulfuric acid into the reactor, seal it, and nitrify it at room temperature for 18 hours, and control the nitrogen content to be 10% of the dry matter of thatch and sorghum stalks;

[0057] 3. Dissolution: Evenly pour 30 kg of methanol into the reactor, stir and dissolve for 10 hours at room temperature;

[0058] 4. Neutralization: The solution is pumped into the neutralization tank, and liquid ammonia is slowly added under stirring until the pH value reaches 4, and then pumped into the etherification tank;

[0059] 5. Etherification: Slowly feed ethylene oxide at room temperature, react for 8 hours, and pump into the decolorization tank after etherification is complete;

[0060] 6. Deco...

Embodiment 3

[0072] Embodiment 3 comprises the following steps:

[0073] 1. Impurity removal and drying: 20 kg of straw and wheat straw without impurities with a moisture content of <9% are put into the nitrification reactor;

[0074] 2. Nitrification: Evenly pour 28 kg of 98% nitric acid into the reactor, seal it, and nitrify it at room temperature for 48 hours, and control the nitrogen content to be 8% of the dry matter of rice straw and wheat straw;

[0075] 3. Dissolution: Evenly pour 26 kg of methanol into the reactor, stir and dissolve for 12 hours at room temperature;

[0076] 4. Neutralization: The solution is pumped into the neutralization tank, and liquid ammonia is slowly added under stirring until the pH value reaches 5.5, and then pumped into the etherification tank;

[0077] 5. Etherification: Slowly feed propylene oxide at room temperature, react for 4 hours, and pump into the decolorization tank after etherification is complete;

[0078] 6. Decolorization: Add 6 kg of act...

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PUM

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Abstract

The invention relates to a method of preparing vehicle fuel through a straw chemical method, and belongs to the technological field of fuel oil for internal combustion engine. The method comprises the following processes: removal of impurities, drying, nitration, dissolution, neutralization, etherification, decoloring, preparation, distillation and fine filtration. Thus the product of fuel oil for the internal combustion engine can be made. The modulation process should be added. The fuel oil produced in the method has no hazardous substances, high octane value, no corrosion, and good dynamic performance. Moreover, the main raw materials can be completely based on renewable resources; the production process has no three-waste emission and can achieve the effects of continuous and large-scale production, high output, low cost and good benefits.

Description

technical field [0001] The invention belongs to the technical field of fuel oil for internal combustion engines, in particular to the technology of using straw to produce fuel oil for automobiles. Background technique [0002] Petroleum, as a fossil fuel, will eventually be exhausted, and it has become an inevitable trend to replace petroleum with renewable fuel oil. At present, the price of oil is soaring, and renewable fuel must be commercialized as soon as possible, which has become the unanimous voice of governments, business circles, and scientific and technological circles all over the world, and a lot of manpower, material resources, and financial resources have been invested in research and development. Replace gasoline with methyl alcohol and ethanol all there are many problems to existing engine. The patent application "a fuel oil for internal combustion engines" published on June 25, 2003 (Patent No. 01129189.3), records that the fuel oil for internal combustion ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G1/00
Inventor 谢新佑杜良才杜仲谢凯
Owner 谢新佑