12 results about "Organic chloride compound" patented technology

The application discloses a quenching system suitable for treating high-temperature flue gas of organic chlorides incineration, which comprises a quenching device and an absorption tower; the quenching device comprises a quenching device jacket serving as a cooling medium channel arranged on an outer wall and a cooling graphite ring arranged on a top; the cooling graphite ring comprises a graphite ring jacket serving as a cooling medium channel, an overflow ring gap is formed on an upper portion of an inner wall of the graphite ring jacket, and cooling medium overflowing from the overflow ring gap can flow down along an inner wall of the quenching device; the quenching device jacket and the graphite ring jacket are communicated through a communication pipeline. The application has the following advantages: 1) the high-temperature flue gas can be rapidly cooled to 120 DEG C or below, the safe and stable operation of the absorption tower is guaranteed, and the generation of dioxin is avoided; 2) the cooling medium is uniformly distributed in the jacket, and the heating of each point in the inner cylinder of the quenching device is uniform; and 3) the high-temperature flue gas can be prevented from washing and corroding the interior.

This invention discloses a process for selective dechlorination of cracked oil under hydrotreating, belonging to the field of heavy oil processing and refining technology. The process includes: pressurizing and heating the feedstock cracked oil to 250-350°C, mixing it with hydrogen, and then feeding it into a fixed-bed dechlorination reactor packed with a specific dechlorinating agent; the reaction is carried out under a pressure of 2.5-3.0 MPa, where organochlorides in the cracked oil are selectively converted and fixed onto the dechlorinating agent, while impurities such as organic sulfur and basic nitrogen do not undergo significant hydrogenation reactions. After cooling and gas-liquid separation, the reaction product yields dechlorinated cracked oil with a chlorine content of less than 10 μg / g, which can be directly used for subsequent hydrorefining. This invention solves the problem of organochlorine removal before hydrorefining of cracked oil. Through selective dechlorination, it avoids equipment corrosion problems caused by hydrogen chloride generation in subsequent processes, while reducing ineffective hydrogen consumption. The process is simple and economical.

The invention belongs to the technical field of waste plastic pyrolytic oil treatment, and discloses a waste plastic pyrolytic oil hydrodechlorination method which comprises the following steps: introducing waste plastic pyrolytic oil, and carrying out first-stage hydrotreatment on the basis of a first metal sulfide catalyst in combination with preset first hydrogenation temperature, pressure, air speed and hydrogen-oil volume ratio, performing first-stage hydrotreating on the waste plastic pyrolysis oil to remove easily polymerized dialkene and monoolefine to obtain first-stage hydrotreated waste plastic pyrolysis oil, and performing second-stage hydrotreating on the first-stage hydrotreated waste plastic pyrolysis oil on the basis of a second metal sulfide catalyst in combination with preset second hydrogenation temperature, pressure, air speed and hydrogen-oil volume ratio to obtain a second-stage hydrotreated waste plastic pyrolysis oil; organic chlorides are removed, olefin is converted into alkane through hydrogenation, and dechlorinated waste plastic pyrolytic oil is obtained. According to the method, dialkene, monoolefine and organic chlorides in the waste plastic pyrolytic oil are removed, and the quality of the waste plastic pyrolytic oil is improved.

Organic chlorides are removed from bio-oils, including vegetable oils and animal fats, that are to be coprocessed to meet sustainability goals. The organic chlorides are removed by using active materials such as silica-alumina containing adsorbents. The bio-oils that are targeted for treatment contain greater than 5 ppmw chlorides and are planned for more than 10% of the feedstream that is being processed.

Disclosed herein are methods of improving the restart performance of a high-selectivity ethylene oxide catalyst that has been shut down due to a planned or unplanned outage. It is believed that the proper selection of process variables on restart avoids exacerbating catalyst surface overchloriding that may occur when subsurface chlorides are diffused to the catalyst surface. In accordance with the method, the initial restart reaction temperature is no more than five (5) degrees Celsius above an initial start-up steady-state reaction temperature on fresh catalyst and is no more than five (5) degrees Celsius below the initial start-up steady-state reaction temperature. The addition of a make-up organic chloride to the reactor feed gas is deferred until the reactor outlet oxygen concentration equals or exceeds 0.5 mole percent and until a relative scaled reactor vinyl chloride feed gas concentration is no greater than 110 percent.

Organic chlorides are removed from bio-oils, including vegetable oils and animal fats, that are to be coprocessed to meet sustainability goals. The organic chlorides are removed by using active materials such as silica-alumina containing adsorbents. The bio-oils that are targeted for treatment contain greater than 5 ppmw chlorides and are planned for more than 10% of the feedstream that is being processed.

A process for the epoxidation of ethylene, the process comprising: contacting an inlet feed gas comprising ethylene, oxygen and one or more reaction modifiers consisting of organic chlorides with an epoxidation catalyst comprising a support and having silver, rhenium promoters and one or more alkali metal promoters deposited on the support; wherein the inlet feed gas has a total catalyst chloriding effectiveness value (Cleff) represented by formula (I): wherein [MC], [EC], [EDC] and [VC] are the concentrations in ppmv of chloromethane (MC), chloroethane (EC), dichloroethane (EDC) and chloroethylene (VC), respectively, and [CH4], [C2H6] and [C2H4] are the concentrations in mole percent of methane, ethane and ethylene, respectively, in the inlet feed gas; wherein the process is operated at a reaction temperature having a value T1 and with the inlet feed gas having an optimal total catalyst chloriding effectiveness value Cl 3 efficacy value Cl eff1 1, to produce ethylene oxide, wherein the ethylene oxide production parameter is a value EO1; and characterized in that the support is a fluoride mineralized alpha-alumina support, and subsequently operating the process so that at a cumulative ethylene oxide production cumEO x , wherein cumEO x is at least 0.6 kton ethylene oxide / m 3 of catalyst greater than cumEO1, the reaction temperature 5 has an increased value Tx to maintain the ethylene oxide production parameter at a value EO1, while controlling the optimal total catalyst chloriding effectiveness value Cl effx of the inlet feed gas so that the ratio Cl effx / C leff1 is in the range of 0.8 to 1.2.

Provided herein are methods of making compositions comprising mixtures of lactones. Also provided herein are mixtures of lactones produced by the methods provided herein. An example lactone composition can include a 5-hydroxy-2-decenoic acid-δ-lactone, a 3,5-dihydroxydecanoic acid-δ-lactone, and sulfur, nitrogen, phosphorus, potassium, magnesium, calcium, sodium, iron, aluminum, silicon, organic chloride, 3,5-dihydroxydecanoic acid, a carbohydrate, free fatty acids, or a combination thereof.

A process is provided for dechlorinating and separating a mixture of n-butane and alkylate. The process includes separating, in a separation zone, a feed stream comprising light hydrocarbons, propane, isobutane, organic chlorides, n-butane, and alkylate with C5+ hydrocarbons into an overheads stream comprising light hydrocarbons, propane, and isobutane and a bottoms stream comprising organic chlorides, n-butane and alkylate; passing the bottoms stream to a catalytic dechlorination zone configured to convert the organic chlorides to HCl and paraffins under catalytic dechlorination conditions, the catalytic dechlorination zone comprising a vessel and being configured to provide a HCl-rich stream, an n-butane-rich stream, optionally an isopentane-rich stream, and an alkylate-rich stream; removing the HCl-rich stream from the catalytic dechlorination zone as a gaseous overheads product; recovering the n-butane-rich stream from the catalytic dechlorination zone as a liquid side-draw product; optionally recovering the isopentane-rich stream from the catalytic dechlorination zone as a side-draw product; and recovering the alkylate-rich stream from the catalytic dechlorination zone as a liquid bottoms product.

The application relates to the field of organic chemistry and specifically discloses a synthesis method of berberine hydrochloride. The synthesis method of the berberine hydrochloride comprises the following steps: S1, bromo-piperonyl ethylamine and o-veratraldehyde are subjected to reductive amination to synthesize an intermediate II; S2, the intermediate II is subjected to Suzuki coupling reaction with an organic boron compound under the catalysis of a palladium metal organic compound to synthesize an intermediate III; S3, the intermediate III is subjected to amino chlorination with an organic chloride to synthesize an intermediate IV; S4, the intermediate IV is subjected to intramolecular atom transfer radical addition and intramolecular Friedel-Crafts alkylation tandem reaction in a mixed solvent under the catalysis of a copper catalyst to synthesize an intermediate V; and S5, the intermediate V is subjected to oxidative aromatization reaction with iodine under the catalysis of a base to synthesize the berberine hydrochloride. The synthesis process is simpler, the reaction condition is easier to control, the yield is high, and the method is suitable for industrial production.

A method is provided for etching a stack beneath a carbon-containing mask, the method comprising multiple cycles, each cycle being a carbon deposition step in which carbon is selectively deposited on the upper surface of the carbon-containing mask, activating the upper surface of the carbon-containing mask by colliding ions with the upper surface of the carbon-containing mask, and a hydrogen source, carbon tetrachloride (CCl4) and C x H y Cl z Flowing a deposit gas containing an organic chloride source selected from at least one of the following (wherein x>0 and z>0), and converting the deposit gas into a plasma, at least one C n Cl m The process includes a carbon deposition step of depositing carbon on a carbon-containing mask by forming radicals or ions of x>0 and z>0 with at least one H radical or ion, and an etching step of etching features within the stack.