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Conversion and utilization process for mixed C4

A technology of mixing C4 and process, applied in the field of oil refining, which can solve the problems of difficult to achieve catalytic effect, high energy consumption, and inability to solve catalyst wear and other problems

Active Publication Date: 2017-06-20
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] CN101674883A discloses a zinc ferrite catalyst. It is difficult to achieve an ideal catalytic effect with a simple combination of zinc ferrite, and the catalyst is used in a fixed bed reactor, the temperature rise of the catalyst bed is serious, and the energy consumption is high. Wear problems on fluidized bed reactors
Some of these patents have been applied industrially in China, but due to the limitation of butadiene demand and technology level at that time, the production was forced to stop

Method used

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  • Conversion and utilization process for mixed C4

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0084] This embodiment provides an oxidative dehydrogenation catalyst, and the specific preparation process of the catalyst includes the following steps:

[0085] (1) At first the precursor zinc nitrate hexahydrate 1785g of metal A used, the precursor nickel nitrate hexahydrate 90g of B, the precursor calcium chloride hexahydrate 197.1g of C, the precursor tungsten trioxide 5g of D are ground into 50 mesh microspheres; secondly, zinc nitrate hexahydrate is divided into two parts of 1071g and 714g according to the ratio of 60% and 40%, and nickel nitrate hexahydrate, calcium chloride hexahydrate and tungsten trioxide are mixed uniformly;

[0086] (2) Configure 8.5L 2mol / L ferric nitrate solution, under stirring conditions, first gradually add 1071g zinc nitrate hexahydrate into the ferric nitrate solution, react for 70 minutes, then slowly add nickel nitrate hexahydrate, chlorinated hexahydrate The mixture of calcium and tungsten trioxide, after reacting for 90 minutes, slowly ...

Embodiment 2

[0091] This embodiment provides an oxidative dehydrogenation catalyst, and the specific preparation process of the catalyst includes the following steps:

[0092] (1) Firstly, 622.5g of copper nitrate precursor of metal A used, 116.4g of cobalt nitrate hexahydrate precursor of B, 20.8g of barium chloride precursor of C, and 12g of tungsten trioxide precursor of D are ground to 70 mesh Microspherical; Secondly, copper nitrate is divided into two parts of 404.6g and 217.9g according to the ratio of 65% and 35%, and cobalt nitrate hexahydrate, barium chloride and tungsten trioxide are mixed uniformly;

[0093] (2) Configure 36L of 0.5mol / L ferric nitrate solution, under stirring conditions, first gradually add 404.6g of copper nitrate to the ferric nitrate solution, react for 60 minutes, then slowly add nickel nitrate hexahydrate and calcium chloride hexahydrate And the mixture of tungsten trioxide, after reacting for 70 minutes, slowly add 217.9g of copper nitrate, and after rea...

Embodiment 3

[0098] This embodiment provides an oxidative dehydrogenation catalyst, and the specific preparation process of the catalyst includes the following steps:

[0099] (1) First, 297.5g of the precursor of metal A, zinc nitrate hexahydrate, 25.4g of manganese sulfate monohydrate, the precursor of metal A, 266g of strontium chloride hexahydrate, the precursor of C, and 13.9g of tungsten trioxide, the precursor of metal Grinding into 40 mesh microspheres; secondly, zinc nitrate hexahydrate is divided into two parts of 208.3g and 89.2g according to the ratio of 70% and 30%, and manganese sulfate monohydrate, strontium chloride hexahydrate and tungsten trioxide are mixed evenly;

[0100] (2) Configure 10L of 0.7mol / L ferric nitrate solution, under stirring conditions, first gradually add 208.3g of zinc nitrate hexahydrate into the ferric nitrate solution, react for 30 minutes, then slowly add manganese sulfate monohydrate and chlorine hexahydrate The mixture of strontium chloride and t...

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Abstract

The invention provides a conversion and utilization process for mixed C4. The process prepares a gasoline component with a high octane number and butadiene from mixed C4. According to the invention, on the basis of the characteristic that the contents of n-butane, isobutane and olefins in mixed C4 are high, the raw material mixed C4 is allowed to successively pass through an oxidative dehydrogenation unit, an etherification unit and a catalytic dehydrogenation unit so as to obtain butadiene and the gasoline component with a high octane number. Meanwhile, the invention also provides a catalyst applied to oxidative dehydrogenation of olefins for preparation of dialkene and a preparation method thereof. The conversion and utilization process for mixed C4 in the invention overcomes the problem that dialkene severely influences the conversion rate of tertiary carbon olefins, the yield of high-octane-number gasoline and the contents of etherification products in gasoline in the process of etherification, can by-produce a certain amount of high-value dialkene and is improved in economic benefits and market competitiveness.

Description

technical field [0001] The invention belongs to the technical field of oil refining, and in particular relates to a mixed C4 conversion and utilization process. Background technique [0002] Entering the Twelfth Five-Year Plan, with PetroChina Guangdong Petrochemical 20 million tons / year refining, Kunming 10 million tons / year refining, Sichuan Petrochemical refining and chemical integration project, Fushun Petrochemical 800,000 tons / year ethylene, Daqing Petrochemical 1.2 million tons / year With the advancement of ethylene reconstruction and expansion projects, PetroChina's refining capacity and ethylene production capacity will further expand, and the output of catalytic cracking C4 and cracking C4 resources by-products in refineries will also increase significantly. C4 resources are mostly used for the production of MTBE, alkylated oil, and polymerized monomers, and most of them are burned as civil fuels. However, C4 hydrocarbons and top oils are not only cheap, but also h...

Claims

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Application Information

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IPC IPC(8): C07C5/48C07C11/167C07C41/06C07C43/04C07C5/333C07C11/08C10G67/12B01J23/888B01J23/889
CPCB01J23/002B01J23/888B01J23/8892B01J2523/00C07C5/3332C07C5/48C07C41/06C10G67/12C10G2300/305C10G2400/02C07C11/167C07C43/046C07C11/08B01J2523/17B01J2523/23B01J2523/69B01J2523/842B01J2523/845B01J2523/22B01J2523/67B01J2523/27B01J2523/24B01J2523/72B01J2523/25B01J2523/37B01J2523/847
Inventor 李长明黄剑锋张松显田亮孙世林马应海程亮亮程琳刘飞
Owner PETROCHINA CO LTD
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