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Normal temperature dechlorination agent and preparation method thereof

A dechlorination agent and normal temperature technology, applied in chemical instruments and methods, other chemical processes, alkali metal oxides/hydroxides, etc., can solve the problem that the purification degree can only reach less than 1PPm, and achieve superior performance and adsorption capacity Enhanced, low-cost effects

Inactive Publication Date: 2016-03-23
SHANGHAI UNIV OF ENG SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] U.S. patent document US4639259 discloses a dechlorination agent, which is to load the active material alkaline earth metal on alumina with x-ρ phase structure. The results show that the chlorine capacity of the above dechlorination agent can only reach 13.8m %, and the purification degree can only reach less than 1PPm

Method used

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  • Normal temperature dechlorination agent and preparation method thereof

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Embodiment 1

[0036] 6mmol of Zn(NO 3 ) 2 ·6H 2 O and 6 mmol of imidazolium chloride 1,3 diacetate were placed in a 200 mL Erlenmeyer flask, and 100 mL of DMF was added, stirred and dissolved to obtain a clear solution.

[0037] Put 50g of carbon black into the solution and stir well, put them together in a stainless steel reaction kettle, then add 20ml of DMF, crystallize at 200°C for 5 days, wash the crystals with DMF and 1,2 dichloromethane for several times , and then vacuum-dried at 80°C for 6 hours to obtain the dechlorinating agent precursor;

[0038] The obtained activated carbon-containing dechlorination agent precursor and the slurry calcium hydroxide are uniformly mixed in a weight ratio of 2:8, and then pressed into tablets or extruded, dried (20wt% CO should be introduced into the air) 2 gas) to get the dechlorination agent of the present invention. The physical properties and chlorine capacity of the dechlorination agent are shown in Table 1.

Embodiment 2

[0040] The metal ligand in embodiment 2 is changed into 6mmol of Al(NO 3 ) 3 9H 2 O, other steps are the same. The physical properties and chlorine capacity of the dechlorination agent are shown in Table 1.

Embodiment 3

[0042] The metal ligand in embodiment 1 is changed into 6mmol of Ca(NO 3 ) 2 4H 2 O, other steps are the same. The physical properties and chlorine capacity of the dechlorination agent are shown in Table 1.

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Abstract

The invention provides a normal-temperature dechlorination agent and a preparation method thereof. The normal-temperature dechlorination agent comprises a carrier, an active component MOF material supported by the carrier, and an adhesive agent calcium hydroxide; the MOF material is prepared by dissolving an organic ligand and metal ions in a solvent through a hydrothermal reaction method; the organic ligand is selected from substituted or unsubstituted aromatic polycarboxylic acids containing one or more rings, and from substituted or unsubstituted aromatic polycarboxylic acids containing at least a hetero atom and containing one or more rings; and the metal ligand is most preferably selected from nitrates or chlorides. The normal-temperature dechlorination agent has relatively large specific surface area, simple in synthetic technology, superior in performances and wide in application scope.

Description

technical field [0001] The invention relates to a gas dechlorination agent and a preparation method thereof, in particular to a dechlorination agent for removing hydrogen chloride from normal temperature gas and a preparation method thereof. Background technique [0002] In recent years, in order to increase the output of crude oil, various oil recovery additives, such as demulsifiers and acidifiers, are widely used in various oil fields, which contain various types of organic chlorides. Most of these organic chlorides exist in the atmospheric and vacuum products. Straight run naphtha fraction. The platinum reforming process consists of three sets of devices: pre-hydrogenation, catalytic reforming and catalyst regeneration, all of which have chlorine corrosion problems. HCl will cause corrosion or perforation of downstream equipment, and will also cause catalyst adsorption in downstream devices, resulting in changes in the acidity of the catalyst and affecting the normal pe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/22B01J20/30B01J20/28B01D53/02
Inventor 唐博合金金仁哲张伟高艺龙吴建祥周群群周嘉新腾大全李博赵家昌潘建民
Owner SHANGHAI UNIV OF ENG SCI
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