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Comprehensive utilization method of catalytic cracking gasoline sludge

A technology for catalytic cracking of gasoline and alkali slag, which is applied in the direction of chemical instruments and methods, preparation of alkali metal compounds, organic compounds, etc., can solve the problems of inability to form economies of scale, complex process flow, complex purification treatment, etc., and achieve the reduction of easily oxidized Possibility of deterioration, simple process flow, effect of reducing investment

Active Publication Date: 2012-11-21
LANZHOU KANGSHUN PETROCHEM
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

The problem with the above-mentioned several methods is that the technological process is complicated, and the pyrolysis method includes high-temperature pyrolysis method and medium-temperature thermal method, because the sulfur dioxide-containing gas obtained by low-temperature pyrolysis contains more water vapor, hydrocarbons, and solid dust. and other impurities, further use requires complicated purification process; acid corrodes the equipment seriously, and the product quality is poor
In addition, because the amount of acid slag is generally small, it cannot form economies of scale

Method used

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  • Comprehensive utilization method of catalytic cracking gasoline sludge
  • Comprehensive utilization method of catalytic cracking gasoline sludge
  • Comprehensive utilization method of catalytic cracking gasoline sludge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Take 400ml of catalytic cracking gasoline alkali residue and place it in a 500ml beaker, neutralize it with alkylated acid residue until the acidity reaches pH 3-4, stir for 20-30 minutes, and control the temperature at 40-50°C to reduce light The oil evaporates. After standing still, the layers were separated, and the upper oil phase was taken out to obtain P-1. The results are shown in Table 1.

Embodiment 2、3

[0033] Add 15m 3 Catalyzed cracking gasoline alkali slag is put in the reactor, add alkylated acid slag, control the reaction temperature at 40-60°C, stir at 100 rpm, stop adding acid when the pH is 3-6, and the H discharged from the top of the kettle 2 S and other gases are absorbed with waste lye, continue to stir for 20 to 30 minutes, put them into the separation tank, and let them stand for 2 to 3 hours. The water phase is separated from the oil phase. The oil phase yield is shown in Table 2.

[0034] Table 2 15m 3 Device neutralization reaction results

[0035]

Embodiment 4

[0037] Take the oil phase produced in Example 2 and put it into the distillation bottle of the glass distillation device with a distillation column of ф38×300mm, first carry out atmospheric distillation, control the temperature at the top of the tower at 80-94°C, and collect the water-containing light oil product. Then conduct moderate vacuum distillation, control the tower top temperature at 150-160°C, and the gauge pressure at 280-300mmHg to collect crude phenol products. The results are shown in Table 3.

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Abstract

The invention discloses a comprehensive utilization method of catalytic cracking gasoline sludge. The invention relates to the comprehensive utilization method of a gasoline sludge resource. The main contents are as follows: firstly neutralizing gasoline sludge by sulfuric acid alkylation acid sludge, carrying out oil-water separation on a neutralized product to form an oil phase and a water phase; respectively carrying out constant-pressure or moderate vacuum distillation on black brown oil phase with malodor to obtain bright light oil without malodor and crude phenol; naturally evaporating the water phase to separate out sodium persulfate crystal, and carrying out processes such as recrystallization on crystal sodium sulfate, and finally obtaining fine powder feed-level sodium sulfate by forcibly airing and baking the crystal sodium sulfate.

Description

technical field [0001] The invention relates to a method for comprehensive utilization of catalytic cracking gasoline alkali residue, in particular to a method for simultaneously comprehensively utilizing acid residue and catalytic cracking gasoline alkali residue in the petrochemical industry. Background technique [0002] In the process of petroleum refining and petrochemical industry, many devices using acid and alkali as catalyst or refining reagent are involved. For example, concentrated sulfuric acid is used as catalyst in most of the alkylation process, and a large amount of waste acid is discharged during the production process; A large amount of acid slag and alkali slag should also be discharged during the acid and alkali refining process of various petrochemical products. [0003] In the process of petroleum processing, washing refined petroleum products with sodium hydroxide solution will discharge alkali residues. According to the different refined oil products,...

Claims

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Application Information

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IPC IPC(8): C02F9/10C01D5/00C01D5/18A23K1/175C10G7/00C10G53/02C07C37/74C07C39/04C02F1/66C02F1/04
Inventor 谢肇新杨林青梅教宗甘黎明秦进林马文娟
Owner LANZHOU KANGSHUN PETROCHEM
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