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A kind of low temperature liquid phase dechlorination agent and its preparation method and application

A low-temperature liquid phase and dechlorination agent technology, which is applied in chemical instruments and methods, refined hydrocarbon oil, and other chemical processes, can solve problems such as poor removal of organic chlorine, avoid low mass transfer efficiency, and simplify the process flow, avoid the effect of uneven mixing

Active Publication Date: 2020-06-26
XIAN ORIGIN CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The dechlorination agent can perfectly solve the problem of poor organic chlorine removal effect of the dechlorination agent in the prior art, and has the dual functions of converting organic chlorine into inorganic chlorine and absorbing inorganic chlorine at the same time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The dechlorination agent in this example is a low-temperature liquid-phase dechlorination agent that can be used at a low temperature of 20°C to 50°C. It is composed of component A and component B adsorbed on component A. The component A is the activated carbon modified by the modifier, the component B is sodium acetate, the mass ratio of the component A to the component B is 5:1, and the mass of the modifier in the component A is The content is 30%, the balance is activated carbon; the modifying agent is potassium hydroxide and cesium nitrate.

[0025] The preparation method of the low temperature liquid phase dechlorination agent of the present embodiment comprises the following steps:

[0026] Step 1, impregnating 116.67g activated carbon in the 3 ) in an aqueous solution, after drying at a temperature of 50°C, and then roasting at a temperature of 450°C for 4 hours to obtain component A;

[0027] Step 2, immerse component A in step 1 in an aqueous solution contain...

Embodiment 2

[0030] The dechlorination agent in this example is a low-temperature liquid-phase dechlorination agent that can be used at a low temperature of 20°C to 50°C. It is composed of component A and component B adsorbed on component A. The component A is the activated carbon modified by the modifier, the component B is sodium acetate, the mass ratio of the component A to the component B is 5:1, and the mass of the modifier in the component A is The content is 35%, the balance is activated carbon; the modifiers are potassium carbonate and cesium nitrate.

[0031]The preparation method of the low temperature liquid phase dechlorination agent of the present embodiment comprises the following steps:

[0032] Step 1, 108.33g activated carbon is impregnated in containing modifying agent (43.75g K 2 CO 3 and 14.58g CsNO 3 ) in an aqueous solution, after drying at a temperature of 50°C, and then roasting at a temperature of 450°C for 4 hours to obtain component A;

[0033] Step 2, immers...

Embodiment 3

[0036] The dechlorination agent in this example is a low-temperature liquid-phase dechlorination agent that can be used at a low temperature of 20°C to 50°C. It is composed of component A and component B adsorbed on component A. The component A is activated carbon modified by a modifier, the component B is sodium acetate, the mass ratio of the component A to the component B is 4:1, and the mass of the modifier in the component A is The content is 20%, the balance is activated carbon; the modifying agent is sodium hydroxide and cesium nitrate.

[0037] The preparation method of the low temperature liquid phase dechlorination agent of the present embodiment comprises the following steps:

[0038] Step 1, impregnating 128.0g activated carbon in a mixture containing modifier (24.0g NaOH and 8.0g CsNO 3 ) in an aqueous solution, after drying at a temperature of 40°C, and then roasting at a temperature of 500°C for 5 hours to obtain component A;

[0039] Step 2, immerse component ...

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Abstract

The invention provides a low temperature liquid phase de-chlorinating agent, which is composed of a component A and a component B. The component B is adsorbed on the component A. The component A is active carbon, which has been modified by a modifier. The component B is sodium acetate or sodium citrate. The mass ratio of the component A to the component B is (4-9):1, and the modifier accounts for20 to 35 wt% of the component A, and the balance being active carbon. The invention also provides a method for preparing the low temperature liquid phase de-chlorinating agent and an application of the de-chlorinating agent in catalytic reforming to generate de-chlorinated oil. The provided de-chlorinating agent perfectly solves the problem that in the prior art, the organic chlorine removing effect of a de-chlorinating agent is not good, and is capable of converting organic chlorine into inorganic chlorine and absorbing inorganic chlorine.

Description

technical field [0001] The invention belongs to the technical field of liquid-phase dechlorination, and in particular relates to a low-temperature liquid-phase dechlorination agent and its preparation method and application. Background technique [0002] The reforming process has become the main way to produce high-octane gasoline and aromatics, and is also an important source of hydrogen in refineries. Therefore, the reforming unit is an important part of the entire refinery's production stability and efficiency improvement. However, due to raw material and process limitations, there will be a small amount of organic chlorine and inorganic chlorine in the reformed product. These chlorides will not only easily cause corrosion or blockage of downstream equipment and pipelines, but also affect the quality of the reformed product. In order to eliminate the impact of these chlorides, the use of adsorbents to remove chlorine in reformed products is a method commonly used in refin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/22B01J20/30C10G25/00
CPCB01J20/20B01J20/223C10G25/003C10G2300/202
Inventor 段超张睿齐小峰潘蕊娟王红梅谢晓莉
Owner XIAN ORIGIN CHEM TECH
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