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Cu molecular sieve based catalyst for removing thiol

A molecular sieve and sulfur removal technology, applied in molecular sieve catalysts, physical/chemical process catalysts, refining with metal oxides, etc., can solve problems such as affecting yield, jeopardizing purification and environmental protection, and improving, and achieve uniform and reasonable bonding of parts. effect of effect

Active Publication Date: 2018-08-10
江西萍乡市成宇陶瓷有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For this kind of traditional molecular sieve catalyst, it is still possible in a short period of time when the flow of oil refining is less processed. If the flow rate is slightly increased, not only the desorption of mercaptans will not be complete, but the molecular sieve catalyst will gradually lose its activity. , from the original export mercaptan less than 10 ppm to the export mercaptan greater than 15-20 ppm, which not only affects the increase in production, but more importantly, endangers the purification and environmental protection

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 1) Weigh the following raw materials in parts by weight: 65 parts of NaX molecular sieve powder; 15 parts of ocean crucible; 13 parts of sepiolite; 1.5 parts of phenolic resin; 2 parts copper;

[0022] 2) Mix and ball mill NaX molecular sieve raw powder, ocean crucible, sepiolite, ammonium chloride, and copper oxide in step 1) to 250-300 mesh, then add it to the reaction kettle, and keep it under sealed conditions at a temperature of 90-120°C Thermal crystallization under water for 20-24h;

[0023] 3) Precipitate, wash, and dry the material after hydrothermal crystallization in step 2), and then dry it at a temperature of 160-200°C;

[0024] 4) Cool the dried raw materials in step 3) to room temperature, mix them evenly with phenolic resin and carboxymethyl cellulose, granulate or extrude, and bake at 675°C for 2 hours to obtain mercaptan removal With Cu molecular sieve catalyst.

[0025] Product performance measurement: strip particle size 3.2-3.7mm, equilibrium wat...

Embodiment 2

[0027] 1) Weigh the following raw materials in parts by weight: 80 parts of 13X-D molecular sieve powder; 15 parts of ocean crucible; 13 parts of sepiolite; 0.5 parts of phenolic resin; 3 parts of carboxymethyl cellulose; 5 parts of ammonium chloride ; 2 parts of copper oxide;

[0028] 2) Mix and ball mill 13X-D molecular sieve raw powder, ocean crucible, sepiolite, ammonium chloride, and copper oxide in step 1) to 250-300 mesh, then add to the reaction kettle, and store at 90-120°C under sealed conditions Hydrothermal crystallization at the temperature of 20-24h;

[0029] 3) Precipitate, wash, and dry the material after hydrothermal crystallization in step 2), and then dry it at a temperature of 160-200°C;

[0030] 4) Cool the dried raw materials in step 3) to room temperature, mix them evenly with phenolic resin and carboxymethyl cellulose, granulate or extrude, and bake at 675°C for 5 hours to obtain mercaptan removal With Cu molecular sieve catalyst.

[0031] Product pe...

Embodiment 3

[0033] 1) Weigh the following raw materials in parts by weight: 75 parts of 13X-D molecular sieve powder; 20 parts of foreign crucible; 12 parts of sepiolite; 0.5 parts of high-density polyvinyl chloride; 5 parts of ammonium; 2 parts of copper oxide;

[0034] 2) Mix and ball mill 13X-D molecular sieve raw powder, ocean crucible, sepiolite, ammonium chloride, and copper oxide in step 1) to 250-300 mesh, then add to the reaction kettle, and store at 90-120°C under sealed conditions Hydrothermal crystallization at the temperature of 20-24h;

[0035] 3) Precipitate, wash, and dry the material after hydrothermal crystallization in step 2), and then dry it at a temperature of 160-200°C;

[0036] 4) Cool the dried raw materials in step 3) to normal temperature, mix them evenly with high-density polyvinyl chloride and carboxymethyl cellulose, granulate or extrude them, and bake them at 575°C for 5 hours to obtain the exfoliated Cu molecular sieve catalyst for mercaptan removal.

[...

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PUM

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Abstract

The invention discloses a preparation method of a Cu molecular sieve based catalyst for removing thiol. The preparation method comprises the following specific steps: 1) weighing raw materials; 2) mixing natural zeolite, cruciate soil, sepiolite, a pore increasing agent and a copper source and carrying out ball milling until the size is 250 to 300 meshes; then adding a mixture into a reaction kettle and carrying out hydrothermal crystallization; 3) carrying out precipitation, washing, spin-drying and drying on the materials subjected to the hydrothermal crystallization; 4) after cooling the dried raw materials and uniformly mixing the raw materials with resin and cellulose, molding and baking. According to the preparation method disclosed by the invention, the thiol outlet concentration ofthe prepared catalyst is less than 5ppm and the application service life of the molecular sieve catalyst is increased to the normal flow of 1 to 15000.

Description

technical field [0001] The invention relates to the field of molecular sieve catalysts, in particular to a Cu molecular sieve catalyst for removing mercaptans. Background technique [0002] Deep removal of mercaptans is an important environmental protection project of national oil refining and chemical industry. Such as rubber polymerization device, naphtha fine desulfurization device, and aviation kerosene fine desulfurization device are all important world-class environmental protection projects. The process technology for removing mercaptans is to use the distillate oil of refined oil as raw material in the non-hydrogen state, and pass through the fixed bed layer equipped with copper molecular sieve catalyst at a certain temperature and space velocity, under the action of molecular sieve catalyst Next, the mercaptan series in the refinery fraction is reacted to convert the odorous mercaptans in the refinery fraction into disulfides without odor. [0003] At present, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/14B01J29/76C10G29/12C10G29/16C10G29/00
CPCB01J29/146B01J29/76C10G29/00C10G29/12C10G29/16C10G2300/202C10G2300/70
Inventor 甘成模黄德金唐松洁甘玲甘宇张艳稻
Owner 江西萍乡市成宇陶瓷有限责任公司