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Method for continuous production of petroleum sulfonate by micro chemical technology

A technology of petroleum sulfonate and petroleum sulfonic acid, which is applied in the preparation of sulfonate, chemical instruments and methods, organic chemistry, etc., and can solve the problem of limited head of pump equipment, failure to meet normal production, difficult stable operation of graded sulfonation process, etc. problem, to achieve the effect of material consumption reduction

Inactive Publication Date: 2016-06-01
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the production of 10,000-ton industrial-scale petroleum sulfonate, affected by the fluctuation of sulfur trioxide feed (containing acid slag), without a separate pump control equipment, the micro-reaction system staged sulfonation process is difficult to operate stably. Causing Response Continuity to Be Tested
In addition, the head of the pump equipment is limited. On the one hand, the raw material sulfur trioxide will entrain the acid slag into the micro-reaction system; There will be a small amount of sulfonic acid generated, forming products that are less soluble in the reaction system and deposited in the micro-reaction system. During long-term operation, the pressure drop of the system will gradually increase until the flow rate is lower than the set load, which cannot meet normal production.

Method used

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  • Method for continuous production of petroleum sulfonate by micro chemical technology
  • Method for continuous production of petroleum sulfonate by micro chemical technology
  • Method for continuous production of petroleum sulfonate by micro chemical technology

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Experimental program
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Effect test

Embodiment 1

[0021] Production of diesel as raw material:

[0022] Using diesel-based diluent oil with a mass concentration of 50% as the raw material, the microsystem was debugged and operated under the flow loads of 1000, 1200, and 1400 kg / h of the raw material oil, and the flow rate of the raw material oil was controlled by a flow meter. Correspondingly, the mass concentration was 25% sulfonating agent SO3 Solution is controlled respectively with flow rate 400kg / h, 450kg / h, 450kg / h, namely reactant sulfur trioxide and the mass ratio of petroleum distillate (SO 3 / Oil) were 0.2, 0.19, and 0.16. Under the above-mentioned raw material oil load and reactant ratio, adopt the first set of microsystem equipment, the microchannel reactor in the equipment has parallel multichannel of 1.25mm equivalent, the total resistance characteristic design value of this cover microsystem is 0.08MPa / ( 2000kg / h water). During the reaction process, both the microchannel reactor and the microchannel heat exch...

Embodiment 2

[0030] Production of wax oil as raw material:

[0031] Concentration is that 50% wax oil base diluent oil is operated under the load of 1200kg / h through flow meter control flow, and concentration is 25wt.% sulfonating agent SO 3 The solution is controlled at a flow rate of 450-480kg / h, that is, the mass ratio of the reactant sulfur trioxide to the petroleum fraction is 0.19-0.2. Wax oil sulfonation production adopts direct switching, and diesel sulfonation production is uninterrupted. Affected by the fluidity of wax oil, the microchannel reactor adopts another set of equipment with more channels to reduce the flow resistance under the same load. The design value of the resistance characteristic of this set of systems is 0.05MPa / (2000kg / h water). At the same time, in order to reduce the reaction temperature, in addition to reducing the inlet temperature of the cooling water to about 20°C, the mass ratio control of the reactant sulfur trioxide to the wax oil-based petroleum fra...

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Abstract

A method for continuous production of petroleum sulfonate by a micro chemical technology includes the steps: a diluted petroleum fraction and diluted liquid sulfur trioxide continuously pass through a micro channel reactor integrating micro reaction and micro heat exchange and are subjected to reaction and heat exchange in the micro channel reactor, and then petroleum sulfonate is generated; and the obtained petroleum sulfonate is cooled in a subsequent micro channel heat exchanger further, outflows, and then enters a neutralizing salifying work section. The method is mainly characterized in that the reactants sulphur trioxide and petroleum fraction are subjected to reaction at a low mass ratio of 0.15-0.2, and the reaction device comprises the micro channel reactor and the micro channel heat exchanger. The micro chemical technology provides a technical support for continuous production of petroleum sulfonate with ten thousand ton grade industrial scale.

Description

technical field [0001] The present invention relates to liquid phase SO 3 The method for sulfonating petroleum fractions specifically relates to a method for continuously producing petroleum sulfonate by using microchemical technology (that is, a method for continuously producing petroleum sulfonate by using a microreactor). Background technique [0002] Oil is a primary strategic resource related to national energy security, but the current oil recovery rate is generally low. Petroleum sulfonate is considered to be the most commercially promising surfactant for tertiary oil recovery due to its wide source of raw materials, strong interfacial activity, good compatibility with crude oil, good water solubility, and low cost. Broad distillate SO 3 The production of petroleum sulfonate by liquid-phase sulfonation is a rapid and strong exothermic reaction, and the existing process route mainly adopts the kettle-type liquid-phase continuous sulfonation method. The process opera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C309/62C07C303/32
CPCB01J19/00C07C303/32C07C309/62
Inventor 陈光文焦凤军
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI