31results about "Sulfo/sulfonyldioxy group formation/introduction" patented technology

The SO3 gas jetting sulfonation reactor consists of a nozzle and a reactor kettle. The nozzle includes a gas jet, a liquid distributing cavity, an atomizing jet, a liquid material inlet and a gas mixture inlet. The nozzle is fixed in the top of the reactor kettle, the atomizing jet is stretched into inside of the reactor kettle, and the reactor kettle has product outlet in the lower end. The present invention is suitable for sulfonating different kinds of organic material, and has the advantages of reasonable structure, great operation flexibility, simple operation, easy material replacement, stable product quality, etc.

A method and a device for the sulfonation or the sulfation of organic liquid raw materials with an SO₃/air mixture and other reaction gases in order to perform rapid, highly exothermic gas-liquid reactions in conventional thin-layer falling-film reactors are disclosed. The introduction of the SO₃/air mixture occurs through several feed locations, which are located within (along) the reaction tube or reaction tubes or in the annular gap of annular-gap falling-film reactors. High peak temperatures, undesirable byproducts, worsening of the color and local oversulfation or oversulfonation, which leads to side reactions, are largely avoided.

The present invention relates to a sulfonated tail gas recycling method and a sulfonated tail gas recycling system. The purpose of the present invention is to provide the method and the system, wherein the method and the system have characteristics of less waste gas discharge and less wastewater discharge, and the system has characteristics of reasonable structure, easy manufacture, and low cost. The technical scheme is that: the sulfonated tail gas recycling method comprises the following steps that: dry air enters the lower part of a sulfur trioxide evaporator, and is subjected to counter current contact with liquid sulfur trioxide entering the upper part of an vaporizing mixer so as to evaporate into the sulfur trioxide gas; the sulfur trioxide gas is cooled, enters a sulfonator, is subjected to a contact reaction with an organic material in the sulfonator, and then is output; the sulfonated tail gas is separated from the liquid, wherein the separated liquid material is output and enters a neutralization system, the separated sulfonation tail gas enters an electrostatic demister to carry out a demisting treatment, the partial discharged sulfonated tail gas enters an alkali washing processing system, and the remaining sulfonated tail gas is conveyed to the lower part of the sulfur trioxide mixing evaporator to recycle. The pipeline system of the sulfonated tail gas recycling system is arranged according to the method.

The invention discloses a preparation method of heparinoid. The preparation method comprises the following steps : adopting chondroitin sulfate as a raw material, and treating to obtain heparinoid after sulfonation reaction. In the sulfonation reaction, the adopted solvent is formamide and the adopted sulfonating agent is free sulfur trioxide, fuming sulfuric acid or pyridine sulfur trioxide. The preparation method of heparinoid, disclosed by the invention, has the advantages that the synthesis process is simple, the production and the operation are easily controlled, no special requirement exists for production equipment, the molecular weight range of a product is stable, the physicochemical indexes of the product are controlled in the quality standard range, and simultaneously the product is high in yield and the method is suitable for large-scale industrial production.

An azasteroid mimic or an intermediate for the preparation of an azasteroid and azasteroid mimic is formed via an oxocycloalkenyl isoxazolium anhydrobase and its dimer. The dimer can be used to form mono- and dihydrazones, which can be an azasteroid mimic or an intermediate for the preparation of an azasteroid and azasteroid mimic. A method of preparation of the dimer and the azasteroid mimic or an intermediate for the preparation of an azasteroid and azasteroid mimic occurs with hydrazonation and, optionally, a subsequent dehydrazonation. The dimer can be converted by inserting a nitrogen atom into the six membered ring of to a C-17 position cyclohexenone moiety of the dimer to yield a reduced tetrazolo[1,5-a]azepin-8-yl group. A subsequent hydrozone formation at a benzylic ketone can be carried out to generate an azasteroid mimic with a (triazol-4-yl)imino substituent. Monohydrazones can be converted to their thione equivalents.

The invention discloses a method of improving the sulfonation reaction efficiency. Sulfonation is promoted by removing water generated in a sulfonation reaction. The method is characterized by comprising the step: in a sulfonation reaction process, keeping constant pressure or vacuum, and introducing gas into a reaction system, wherein water in the reaction system is taken away as gas flows out. The invention also discloses a production method of a dispersant MF. With adoption of the sulfonation method, the dispersant MF product is obtained by means of condensation and neutral reactions. In the whole process, unmanageable solid wastes are not generated, the content of sodium sulfate of the obtained product is lower than 5%, and the product can resist 150 DEG C and meets the first grade standard.

The invention relates to a wiped-film sulfonator, belonging to the manufacturing technical field for a reaction device for producing an anion active agent through sulphonation or sulphation of gas SO3. The device comprises an orthostatic reaction cylinder body (8), a stirring shaft (10) with a scraping plate (9) arranged in the orthostatic reaction cylinder body (8), a lower tube plate (11) and an upper plate(5) with a sealed tube plate (4) which are arranged at the two ends of the orthostatic reaction cylinder body; an upper head (2) with a SO3 gas inlet (1) which is arranged at the upper part of the sealed tube plate, a lower head (12) with a reactant outlet (16) arranged at the lower part of the lower tube plate (11), a motor (18) with a reducer (17) which is connected with the stirring shaft (10) and fixed at the upper head (2) or the lower head (12) and 1-3 section cooling jackets (14) with a cooling water inlet (13) and a cooling water outlet (15) which is arranged at the periphery of the orthostatic reaction cylinder body (8), etc. The general structure is designed reasonably, the operation is flexible, the manufacture is easy and the investment is small.

The invention relates to the technical field of sulfonation tail gas treatment, in particular to a method for recycling sulfonation tail gas, comprising the following steps: removing acidic oil mist carried in sulfonation-produced tail gas, dewatering, feeding the dewatered tail gas with supplemented oxygen or air into a sulfur combustion system to produce tail gas mainly composed of sulfur dioxide, further oxidizing the tail gas to obtain tail gas mainly composed of sulfur trioxide, and feeding the tail gas mainly composed of sulfur trioxide into a sulfonation system for sulfonation. The method for recycling sulfonation tail gas provided herein need not use alkaline liquid to absorb and remove sulfur dioxide in the tail gas, no waste liquid is produced, new pollution source due to the absorption by the alkaline is avoided, the tail gas may be recycled without emission, energy consumption is thereby reduced, environmental pollution is greatly reduced, and operation expenditure is also reduced; the method for treating sulfonation tail gas is more applicable to existing sulfonation production modes and has a promising application prospect.

The invention discloses a separation method of a sulfonic acid combination. The separation method of the sulfonic acid combination comprises the following step of: separating the acidity dependence of a hydroxy compound as well as a sulfonic acid combination thereof rapidly by taking a mixture of a substrate of the hydroxy compound (containing phenolic hydroxyl group and alcoholic hydroxyl group) after chemical derivation or biological conversion as raw materials in virtue of chromatographic columns filled by composite materials, and meanwhile through utilizing eluents with different pH values. The separation method of the sulfonic acid combination provided by the invention has wide application in preparing the sulfonic acid combination, and is suitable for the purification and preparation of all sulfonic acid combinations which contain phenolic (alcohol) hydroxyl group, but not contain acidity groups.

The present invention provides a catalyst composition comprising: (a) at least one catalyst, (b) at least one silicon additive, and (c) an optional base. The invention also provides a use of the catalyst composition or catalyst according to the invention for catalyzing a nucleophilic substitution reaction of a SO2F group-containing compound with a nucleophilic agent. The catalyst or the catalyst composition according to the present invention is capable of sufficiently activating a SO2F group-containing compound and a nucleophilic reagent, thereby enabling the compound and the nucleophilic reagent to efficiently perform a nucleophilic substitution reaction. In addition, the nucleophilic substitution reaction using the catalyst composition or the catalyst is simple and convenient to operate,the yield is high, and the catalyst composition or the catalyst is suitable for large-scale production.