A device and method for recycling waste sulfuric acid from alkylation
A technology of alkylation of waste sulfuric acid and recycling, applied in chemical instruments and methods, ammonia compounds, inorganic chemistry, etc., can solve problems such as phase difference of ammonium sulfate crystals, intermittent operation, difficult recovery of polymerized oil, etc., and achieve saving method flow and operating time, good economic and social benefits, and remarkable energy-saving effects
A technology of alkylation of waste sulfuric acid and recycling, applied in chemical instruments and methods, ammonia compounds, inorganic chemistry, etc., can solve problems such as phase difference of ammonium sulfate crystals, intermittent operation, difficult recovery of polymerized oil, etc., and achieve saving method flow and operating time, good economic and social benefits, and remarkable energy-saving effects
CN105217654BActive Publication Date: 2017-12-15TIANJIN RUYOU TECH CO LTD
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[0026] Describe in detail below in conjunction with accompanying drawing:
[0027] Such as figure 1 Shown: a kind of alkylation waste sulfuric acid recycling treatment device of the present invention:
[0028] It is composed of reaction flotation tower A, crystallizer B, heat exchanger C, mother liquid circulation pump D, condensate water pump E and connecting pipelines in between. The bottom liquid outlet of reaction flotation tower A passes through high temperature and high pressure ammonium sulfate mother liquid pipeline 3 It is connected with the liquid phase inlet of the lower part of the crystallizer B, and enters the liquid in the lower part of the crystallizer B; the bottom solution outlet of the crystallizer B is connected with the upper solution inlet of the reaction flotation tower A through the normal pressure saturated ammonium sulfate mother liquor pipeline 4 and the mother liquor circulation pump D , into the upper liquid phase of the reaction flotation tower A...
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The invention relates to an alkylate waste sulfuric acid resourceful treatment device and method. The device is composed of a reaction flotation tower, a crystallizer, a heat exchanger, a mother solution circulation pump, a condensate pump and connecting pipelines between the components. Alkylate waste sulfuric acid and ammonia gas serve as inlet materials of the reaction flotation tower, and a high-temperature and high-pressure ammonium sulfate mother solution generated at the bottom of the tower enters a crystallizer; low-pressure steam generated by the reaction flotation tower is extracted from the top of the tower and enters an outer jacket of the crystallizer; polymerization oil in the alkylate waste sulfuric acid is subjected to floatation and extraction in reaction and floatation integrated equipment to obtain polymerization oil; the normal-pressure saturated ammonium sulfate mother solution crystallized in the crystallizer returns the reaction flotation tower through the mother solution circulation pump; generated crystals are extracted to serve as ammonium sulfate crystals; the normal-pressure steam generated in the crystallizer is condensed through the heat exchanger and then returns to the reaction flotation tower through the condensate pump; condensation water generated in the outer jacket of the crystallizer returns to the reaction flotation tower through the condensate pump. The method process is simplified, the operation time is shortened, and the method is environmentally friendly.
Description
technical field [0001] The present invention relates to a resource treatment device and method for alkylation waste sulfuric acid, specifically, it is a method for producing sulfuric acid by reacting alkylation waste sulfuric acid with ammonia gas, reaction flotation, depressurization evaporation and crystallization, etc. Ammonium fertilizer and by-product alkylate oil method. The technology belongs to the field of waste resource utilization in the petrochemical industry. Background technique [0002] Alkylate oil (iso-octane) is an important gasoline additive component, which is mainly produced by sulfuric acid method in China. This method produces about 100 kilograms of waste sulfuric acid for every ton of alkylated oil produced, and it is estimated that more than 1 million tons of alkylated waste sulfuric acid needs to be treated in my country every year. This waste sulfuric acid is dark black, contains about 85% sulfuric acid, 5% polymerized oil, 5% sulfuric acid ester...
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Patent Timeline
15 Dec 2017
Publication
CN105217654B
- IPC
- C01C1/242; C08L91/00
- CPC
- Y02P20/10
- Inventors
- 刘春江; 刘辉