A kind of waste dechlorination agent reuse method

A technology of waste dechlorination agent and dechlorination agent, which is applied in the treatment of hydrocarbon oil, petroleum industry, refined hydrocarbon oil, etc., to achieve the effects of high adsorption rate, convenient and safe manual operation, and high dechlorination precision

Active Publication Date: 2020-11-10
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to provide a method for reusing waste dechlorination agent in order to solve the disposal problem of existing catalytic reforming dechlorination agent after use

Method used

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  • A kind of waste dechlorination agent reuse method

Examples

Experimental program
Comparison scheme
Effect test

preparation example

[0038] (1) Preparation of dechlorination agent

[0039] Weigh 37gAlCl 3 ·6H 2 O, 18gCaCl 2 , 10.2gZnCl 2 and 29g NaOH; first dissolve NaOH with 1kg of 298K deionized water, pour it into the reactor and place it in a 298K water bath, then dissolve and mix the above-mentioned weighed metal salt with 0.4kg of deionized water, and slowly add it dropwise to the previous configuration In the lye, stir vigorously, filter after the reaction is completed, wash with a solution mixed with ethanol and deionized water at a mass ratio of 1:1 until the filtrate is neutral, and dry it naturally for use.

[0040] Weigh 150gCaCO 3 , 60gNa 2 CO 3 , 24.5gCuO, 7gNH 4 HCO 3 , 225g clay; put the above powder and the dried filter cake into a vibrating grinder for grinding and mixing, and pass through a 200-mesh sieve, take the sieved mixed powder, add 150g water, and grind it in a kneader at 30r / min After kneading for 10 minutes, the material was in the form of paste. Take out the above pas...

Embodiment 1

[0044] The waste dechlorination agent prepared in the preparation example was placed in a converter, calcined at 500° C. for 100 minutes, cooled and crushed to 10-200 mesh particles. The waste dechlorination agent that pulverizes and the concentration are the alkaline extract of 15% by weight (alkaline substance is Na 2 CO 3 ) are thoroughly mixed and ion-exchanged, wherein the volume ratio of the pulverized waste dechlorination agent to the alkaline extract is 1:5. After sufficient reaction, solid-liquid separation is carried out to separate the regenerated dechlorination agent as a solid phase.

[0045] The regenerated dechlorination agent of 85% by weight, the CaO of 5% by weight, the ZnO of 5% by weight and the carrier (clay) of 5% by weight are mixed and kneaded into a paste, and the paste is placed in a screw extruder Extrude a clover-shaped bar with a diameter of 3mm, and obtain the dechlorination agent product A1 after air-drying.

Embodiment 2

[0047] The waste dechlorination agent prepared in the preparation example was placed in a converter, calcined at 450°C for 60 minutes, cooled and crushed to 10-200 mesh particles. The waste dechlorination agent that pulverizes and the concentration are the alkaline extract of 5% by weight (alkaline substance is K 2 CO 3 ) are fully mixed and ion-exchanged, wherein the volume ratio of the pulverized waste dechlorination agent to the alkaline extract is 1:8. After sufficient reaction, solid-liquid separation is carried out to separate the regenerated dechlorination agent as a solid phase.

[0048] The regenerated dechlorination agent of 80% by weight, the CaO of 6% by weight, the CaCO of 6% by weight 3 Mixed with 8% by weight carrier (clay) and kneaded into a paste, the paste was placed in a screw extruder to extrude a clover-shaped strip with a diameter of 3 mm, and air-dried to obtain the dechlorination agent product A2.

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Abstract

The invention relates to the technical field of oil product dechlorination, and discloses a reutilization method for a waste dechlorinating agent. The method includes: (1) pre-treating the waste dechlorinating agent for removing organic substances in the waste dechlorinating agent; (2) crushing the pretreated waste dechlorinating agent, contacting the crushed waste dechlorinating agent with an alkaline extract liquid, performing solid-liquid separation to obtain a chlorine-containing extract liquid, as a liquid phase, and a regenerated dechlorinating agent, as a solid phase; (3) according to the content of active components and carrier in the regenerated dechlorinating agent, determining that the regenerated dechlorinating agent is granulated directly, or is mixed with extra active components and / or carrier and then is granulated. According to the method, the waste dechlorinating agent can be regenerated and reutilized, wherein the prepared dechlorinating agent has high chlorine capacity and breakthrough chlorine capacity in the temperature range of 25 to 600 DEG C.

Description

technical field [0001] The invention relates to the technical field of dechlorination of oil products, in particular to a method for reusing a waste dechlorination agent. Background technique [0002] With the continuous development of the national economy and the continuous improvement of people's living standards, human society's demand for energy continues to increase. Therefore, major oil companies continue to increase oil production and processing. Due to the continuous development of oil recovery technology, various chlorine-containing oil recovery chemical additives have appeared in oilfields. The addition of such oilfield chemical additives has greatly improved the efficiency of crude oil recovery, but it has had an impact that cannot be ignored on the refining and chemical industry. In the process of petroleum refining, organic chlorine in oilfield chemical additives is converted into HCl after prehydrogenation, which not only causes serious corrosion to pipelines a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G29/00
CPCC10G29/00C10G2300/201
Inventor 夏明桂夏广夏王哲王琦
Owner WUHAN TEXTILE UNIV
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