Method of converting oxygen-containing raw material into gasoline

A technology of oxygen-containing raw materials and gasoline, which is applied in the direction of biological raw materials, petroleum industry, chemical recovery, etc., can solve the problems of high manufacturing cost and unsuitable for large-scale production, and achieve the reduction of operating energy consumption, investment cost and operational complexity , avoid the effect of switching the regeneration process

Active Publication Date: 2016-10-05
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the use of tubular reactors and molten salt heat extraction process makes the equipment manufacturing cost too high and is not suitable for large-scale production, so there are no reports of industrial applications

Method used

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  • Method of converting oxygen-containing raw material into gasoline
  • Method of converting oxygen-containing raw material into gasoline
  • Method of converting oxygen-containing raw material into gasoline

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0087] The catalyst used in this example was prepared by the following method.

[0088] (1) impregnating powdery ZSM-5 molecular sieve (in the form of Na 2 Na content in terms of O is 0.2% by weight, SiO 2 / Al 2 o 3 (molar ratio) = 100, purchased from Sinopec Changling Catalyst Factory), and the time was 5 hours. The impregnated mixture was dried in an oven at 150° C. for 7 hours; the dried solid powder was calcined in a muffle furnace at 560° C. for 5 hours. After the solid obtained by roasting is crushed and sieved, a phosphorus-containing ZSM-5 molecular sieve is obtained, wherein, P 2 o 5 In total, the phosphorus content was 5% by weight.

[0089] (2) Pseudo-boehmite is mixed with kaolin, and the resulting mixture is formulated into a slurry with deionized water, then the phosphorus-containing ZSM-5 molecular sieves obtained in step (1) are added, after stirring, spray drying is carried out to control The outlet temperature of the spray dryer is in the range of 100-...

Embodiment 2

[0096] Using the same method as in Example 1 to convert methanol into gasoline, the difference is that the catalyst is not loaded in the reactor, but the catalyst is continuously sent into the annular vessel through the catalyst feed pipe arranged at the top of the annular vessel, relying on The gravity of the catalyst itself makes it pass through the annular container and leaves the reactor from the catalyst discharge pipe at the bottom of the annular container, wherein the residence time of the catalyst in the annular container of the reactor is controlled to be 300 hours.

[0097] The reaction was carried out continuously for 300 hours. During the continuous reaction, the conversion rate of methanol and the selectivity of gasoline are listed in Table 1.

Embodiment 3

[0099] Adopt the method identical with embodiment 1 to convert methanol into gasoline, the difference is that the catalyst used is prepared by the following method:

[0100] Mix pseudo-boehmite with kaolin, and prepare the resulting mixture into a slurry with deionized water, then add the same ZSM-5 molecular sieve as the ZSM-5 molecular sieve as raw material in step (1) of Example 1, and stir evenly , carry out spray drying, control the outlet temperature of the spray dryer within the range of 100-110°C, and the material drying time is 2 minutes. The particles obtained by spray drying were calcined at 450° C. for 4 hours to obtain a shaped catalyst containing ZSM-5 (volume average particle diameter of 8 mm), wherein the content of ZSM-5 molecular sieve was 80% by weight, and the content of aluminum oxide was 15% by weight. % by weight, the content of clay is 5% by weight.

[0101] The reaction was carried out continuously for 300 hours. During the continuous reaction, the co...

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Abstract

The invention discloses a method of converting an oxygen-containing raw material into gasoline, which includes the step of performing a contact reaction to the oxygen-containing raw material with a catalyst containing molecular sieve in a reaction zone to obtain a mixture containing gasoline, wherein the oxygen-containing raw material is methanol and/or dimethyl ether. The reaction zone includes a raw material zone, a product zone and a catalytic reaction zone. The catalytic reaction zone is arranged annularly and is stretched in the axial direction of the reaction zone. The oxygen-containing raw material is located in the raw material zone and the catalyst is located in the catalytic reaction zone. The raw material zone is adjacently connected to the product zone through the catalytic reaction zone. The oxygen-containing raw material in the raw material zone enters the catalytic reaction zone to contact with the molecular sieve to carry out the reaction, wherein the obtained mixture containing gasoline is fed into the product zone. Compared with a process with a fixed bed reactor, the method is significantly reduced in system pressure drop and is reduced in operation energy consumption, can achieve regeneration of the catalyst in the reactor conveniently, and also can achieve the equal even better raw material conversion rate and gasoline selectivity.

Description

technical field [0001] The present invention relates to a process for converting an oxygenated feedstock to gasoline. Background technique [0002] Methanol is the simplest saturated monohydric alcohol, usually produced by the reaction of carbon monoxide and hydrogen. Through appropriate catalytic processes, methanol can be converted into various petrochemical products such as ethylene, propylene, aromatics or distillates (ie, MTH process). [0003] The process of methanol conversion to gasoline (i.e., MTG process) is a strong exothermic process, and its calorific value is about 1400kg / kg. The following three equations can be used to approximately describe the process: [0004] [0005] There are three existing MTG process routes, namely fixed bed process, fluidized bed process and multi-tubular reactor process. [0006] The early MTG process used fixed bed process. For example, US3931349 discloses a process for converting methanol into gasoline by using a fixed bed. I...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G3/00
CPCY02P20/584Y02P30/20
Inventor 郭湘波杨克勇宗保宁
Owner CHINA PETROLEUM & CHEM CORP
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