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Porous foamed liquid-phase dechlorinating agent as well as preparation method and application thereof

A technology of porous foam and dechlorination agent, which is applied in the refining of solid alkaline materials, treatment of hydrocarbon oil, petroleum industry, etc., can solve the problems of low chlorine capacity and low mechanical strength, and achieve high chlorine capacity, high mechanical strength, Good mass transfer ability

Active Publication Date: 2020-09-04
CHINA NAT OFFSHORE OIL CORP +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] In order to solve the defects of low chlorine capacity and low mechanical strength in the liquid-phase dechlorination agent in the prior art, the object of the present invention is to provide a liquid-phase dechlorination agent and its preparation method and application, especially a kind of high-efficiency porous Foamy liquid phase dechlorination agent, its preparation method and use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] This embodiment provides a liquid-phase dechlorination agent. The thickness of the composite coating of silica sol and nano-zinc oxide in the dechlorination agent is 50 μm, and the mass of nano-zinc oxide is 20% of the mass of the porous foam ceramic carrier.

[0073] The preparation method of described liquid phase dechlorination agent comprises the following steps:

[0074] (1) Soak and clean the porous foam ceramic carrier with 40% sodium hydroxide solution to remove ash and impurities on the surface of the carrier, wash with deionized water until neutral, and dry at 110° C. for 2 hours for later use;

[0075] (2) adding silica sol, nanometer zinc oxide, and polyethylene glycol into deionized water, stirring constantly, to obtain a milky white gel; the concentration of polyethylene glycol in the gel is 1%;

[0076] (3) Immerse the porous foamed ceramic carrier obtained in step (1) in the gel of step (2) for 1 hour, blow off the residual liquid in the channel after ta...

Embodiment 2

[0079] This embodiment provides a liquid-phase dechlorination agent. The thickness of the composite coating of silica sol and nano-zinc oxide in the dechlorination agent is 150 μm, and the mass of nano-zinc oxide is 50% of the mass of the porous foam ceramic carrier.

[0080] The preparation method of described liquid phase dechlorination agent comprises the following steps:

[0081] (1) Soak and clean the porous foam ceramic carrier with 40% sodium hydroxide solution to remove ash and impurities on the surface of the carrier, wash with deionized water until neutral, and dry at 110° C. for 2 hours for later use;

[0082] (2) adding silica sol, nano-zinc oxide, and Tween-80 into deionized water, stirring constantly, to obtain a milky white gel; the concentration of Tween-80 in the gel is 2%;

[0083] (3) Immerse the porous ceramic foam carrier obtained in step (1) in the gel of step (2) for 1 hour, blow off the residual liquid in the channels after taking it out, dry it for 10 ho...

Embodiment 3

[0086] This embodiment provides a liquid-phase dechlorination agent. The thickness of the composite coating of silica sol and nano-zinc oxide in the dechlorination agent is 200 μm, and the mass of nano-zinc oxide is 60% of the mass of the porous foam ceramic carrier.

[0087] The preparation method of described liquid phase dechlorination agent comprises the following steps:

[0088] (1) Soak and clean the porous foam ceramic carrier with 40% sodium hydroxide solution to remove ash and impurities on the surface of the carrier, wash with deionized water until neutral, and dry at 110° C. for 2 hours for later use;

[0089] (2) adding silica sol, nano-zinc oxide, and Tween-80 into deionized water, stirring constantly, to obtain a milky white gel; the concentration of Tween-80 in the gel is 3%;

[0090] (3) Immerse the porous foamed ceramic carrier obtained in step (1) in the gel of step (2) for 1 hour, blow off the residual liquid in the channel after taking it out, dry it for 10...

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Abstract

The invention discloses a porous foamed liquid-phase dechlorinating agent as well as a preparation method and application thereof. The liquid-phase dechlorinating agent comprises a porous foamed ceramic carrier and a composite coating formed on the porous foamed ceramic carrier, wherein the composite coating comprises a binder and a nano oxide. The liquid-phase dechlorinating agent has the advantages of being high in chlorine capacity, high in mechanical strength, high in water resistance, easy to prepare and the like, the crushing strength of the dechlorinating agent is larger than 100 N / cm,and the chlorine penetration capacity at the temperature of 50 DEG C can reach 60% or above.

Description

technical field [0001] The invention belongs to the field of dechlorination agents, and relates to a liquid-phase dechlorination agent and its preparation method and application, in particular to a high-efficiency porous foam liquid-phase dechlorination agent, its preparation method and application. Background technique [0002] Chlorine is a common catalyst and adsorbent poison in industry, and it also pollutes the environment. Because chlorine has high electron affinity and mobility, it is easy to react with metal ions, and often migrates downward with the process fluid, causing permanent poisoning of the catalyst, and it is often the whole bed. For liquid-phase dechlorination of reformed oil, the operating temperature is relatively low, generally not exceeding 70°C. The reformed oil contains a small amount of water, and water has a great influence on the dechlorination agent with alkali metal as the active component, because under the condition of liquid phase dechlorina...

Claims

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Application Information

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IPC IPC(8): C10G19/073
CPCC10G19/073C10G2300/207
Inventor 张海洪于群辛靖侯章贵王文辰王宁陈松刘剑杨国明张博
Owner CHINA NAT OFFSHORE OIL CORP
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