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Method for preparing alkylation gasoline through polycondensation of methanol

An alkylated gasoline and alkylation technology, applied in the chemical industry, can solve problems such as energy consumption, and achieve the effects of reducing production energy consumption, reducing costs, and improving safety and service life.

Inactive Publication Date: 2013-09-11
李新勇
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Direct conversion of methanol into olefins to produce gasoline and diesel fuels, the biggest problem at present is the technical bottleneck of a large amount of energy loss between the natural resources consumed in the manufacturing process and the obtained products

Method used

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  • Method for preparing alkylation gasoline through polycondensation of methanol

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] The making of embodiment 1 methylal hydrocarbon structure catalyst:

[0069] 1) Raw materials: commercially available 4A\5A molecular sieves are used as the carrier, sulfuric acid and Rx+methanesulfonic acid are used as catalysts to produce Al / Si+ / Ca / Na / K / hydrogen type molecular sieves;

[0070] 2) Chemical etching of type A molecular sieve:

[0071] H 2 SO 4 Prepare a solution with a pH value of -1~+2, soak 4A\5A molecular sieves in acid solution for 3h~72h, air dry at 120°C, crystallize in hot air at 180°C~300°C for 5h~72h, and then Metal ions such as Ca / Na / K / are etched under conditions to obtain olefinized channels, and after washing and drying, crystallize at 300°C to 580°C to obtain hydrogen molecular sieve A.

[0072] 3) Production of B-type molecular sieve:

[0073] Prepare Rx + methanesulfonic acid into a solution of PH=-1~2, soak 4A\5A molecular sieves in the acid solution to etch metal ions Ca / Na / K3h~72h, after soaking, washing, neutralization, take out a...

Embodiment 2

[0075] Embodiment 2 Mixed hydrocarbon alkylation catalyst production:

[0076] 1) Raw material: ZSM-5 catalyst raw powder; tungstophosphoric acid; rare earth oxide: ReO 3 , La 2 o 3 , metal oxides: ZnO, Fe 2 o 3 , SnO 2 ; Commercially available 13X molecular sieves.

[0077] 2) Catalyst production:

[0078] A: Rare earth molecular sieve production: Dissolve rare earth oxides in dilute nitric acid to etch metal ions, adjust its pH value to between 0.1 and 4, mix with ZSM-5 catalyst 10% to 70%, and filter, dry, The pH value is adjusted, followed by crystallization at a temperature of 300°C to 600°C to obtain ZSM-5+rare earth alkylated molecular sieves.

[0079] B: Metal catalyst production: react rare earth oxides or metal oxides with dilute nitric acid to obtain nitrate, adjust the pH value of nitrate to a solution of 0.1 to 5, soak 13X molecular sieve in tungstophosphorus (heteropoly) acid 5h~72h, take it out and air dry it, and dry it in hot air at 100℃~200℃ for 1h~72...

Embodiment 3

[0082] Laboratory Preparation of Alkylated Gasoline by Polycondensation of Methanol:

[0083] 1. Experimental conditions:

[0084] 1.1 Raw materials: methanol, methylal, commercially available No. 180 high boiling point solvent oil.

[0085] 1.2 Molecular sieve: 50g of olefin molecular sieve A\B according to the ratio of 1:1, and 20g of alkylated molecular sieve A / B according to the ratio of 4:2.

[0086] 1.3 Experimental equipment:

[0087] One 1000ml three-necked quartz flask, one 250ml separating funnel, one 600mm reflective reflux tower, one ￠50×200mm ground molecular sieve sleeve, one 500mm serpentine condenser tube, one 300W constant temperature heating jacket, one 1000ml volumetric flask , one 250ml reflux molecular sieve, one set of temperature controller at the top of the reactor.

[0088] 2. Experimental steps:

[0089] 2.1 Put the olefin catalyst A / B into the molecular sieve sleeve, and the alkylation catalyst A / B into the reflux molecular sieve, and use glass f...

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Abstract

The invention discloses a method for preparing alkylation gasoline through polycondensation of methanol. The method comprises the following steps: 1) condensing formaldehyde so as to obtain methylal, deoxidize the methylal to form olefin and absorbing the methylal by using solvent oil at the same time so as to obtain mixed hydrocarbon; 2) carrying out methanol dehydroxylation addition to methylate olefin so as to obtain butane, absorbing alkane simultaneously by the mixed hydrocarbon so as to obtain multi-distillation-range alkylation mixed hydrocarbon; and 3) reforming the mixed hydrocarbon so as to obtain mixed alkane multi-distillation-range gasoline. The method for preparing alkylation gasoline through polycondensation of methanol disclosed by the invention has the advantages that the prepared gasoline meets the national standards, and the cost of raw materials can be effectively reduced for gasoline production; the fixed-asset investment of products is reduced; the energy consumption for gasoline and diesel production based on methanol conversion is reduced; and the safety and application cycle of production equipment are improved, and the method lays a foundation for the subsequent production process of CO2-methanol recycling energy.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a method for preparing alkylated gasoline by polycondensation of methanol. Background technique [0002] Alcohol olefinization technology is the mainstream technology of petroleum alternative energy production, among which methanol to olefins process is divided into methanol to ethylene, propylene (methanol-to-olefin, MTO), methanol to propylene (methanol-to-propylene, MTP) . Representative technologies of the MTO process include UOP / Hydro MTO technology jointly developed by Universal Petroleum Corporation (UOP) and Norsk Hydro, and DMTO technology independently developed by the Dalian Institute of Chemical Physics, Chinese Academy of Sciences; representative technologies of the MTP process include Lu The Lurgi MTP technology developed by Lurgi and the FMTP technology independently developed by Tsinghua University in my country. [0003] Since 1976, when th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G3/00C10L1/04
CPCY02P30/20
Inventor 李新勇
Owner 李新勇
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