Abstract: This invention relates to an anionic-cationic-nonionic surfactant as substantially represented by the formula (I), production and use thereof in tertiary oil recovery. The anionic-cationic-nonionic surfactant of this invention exhibits significantly improved interfacial activity and stability as compared with the prior art. With the present anionic-cationic-nonionic surfactant, a flooding fluid composition for tertiary oil recovery with improved oil displacement efficiency and oil washing capability as compared with the prior art could be produced. In the formula (I), each group is as defined in the specification.

Abstract: The invention relates to a molecular sieve SCM-14, a preparation process and use thereof. The molecular sieve has a schematic chemical composition of a formula of “SiO2.1/nGeO2” or a formula of “kF.mQ.SiO2.1/nGeO2.pH2O”, wherein the molar ratio of silicon to germanium, n, satisfies n?30, and other values and symbols are defined in the specification. The molecular sieve has unique XRD diffraction data and can be used as an adsorbent or a catalyst.

Abstract: The present invention relates to a preheating process and a start-up process for the ammoxidation reaction. The preheating process or the start-up process at least includes the step of heating the catalyst bed in the ammoxidation reactor while controlling the reactor operation linear speed to 0.03-0.15 m/s. The start-up process of the present invention has the advantages such as the significantly reduced launch time compared with the prior art and the operation safety.

Abstract: A process for producing ethylene includes the steps of: (1) catalytically cracking a raw material hydrocarbon to obtain a first stream containing propylene; (2) separating the first stream to obtain a C3 component stream; and (3) disproportionating the C3 component stream to obtain an ethylene stream. This process reduces the overall energy consumption of the production process and increases the total yield of the ethylene while obtaining a polymerization-grade ethylene.

Abstract: A feed gas feeding system for a propylene ammoxidation reactor comprises a feed gas mixing system and a feed distributor, wherein a propylene and ammonia mixed gas is mixed by the feed gas mixing system and then uniformly distributed in the propylene ammoxidation reactor by the feed distributor. The initial temperature T0 when the propylene and ammonia mixed gas enters the feed distributor is 10-220° C. The feed gas feeding system can prevent the temperature of the gas mixture at any position in the feed distributor from reaching a temperature at which ammonia decomposes into active nitrogen atoms, thereby reducing a risk of brittle nitriding fractures of the feed distributor.

Abstract: A catalyst for producing light aromatics with heavy aromatics, a method for preparing the catalyst, and a use thereof are disclosed. The catalyst comprises a carrier, component (1), and component (2), wherein component (1) comprises one metal element or more metal elements selected from a group consisting of Pt, Pd, Ir, and Rh, and component (2) comprises one metal element or more metal elements selected from a group consisting of IA group, IIA group, IIIA group, IVA group, IB group, IIB group, IIIB group, IVB group, VB group, VIB group, VIIB group, La group, and VIII group other than Pt, Pd, Ir, and Rh. The catalyst can be used for producing light aromatics with heavy aromatics, whereby heavy aromatics hydrogenation selectivity and light aromatics yield can be improved.

Abstract: The invention relates to a molecular sieve SCM-15, a preparation process and use thereof. The molecular sieve comprises a schematic chemical composition of a formula of “SiO2.GeO2”, wherein the molar ratio of silicon and germanium satisfies SiO2/GeO2?1. The molecular sieve has unique XRD diffraction data and can be used as an adsorbent or a catalyst.

Abstract: A fluidized-bed catalyst suitable for the production of halogenated aromatic nitriles includes an active component and a support. The active component is a complex having the following composition expressed in atomic ratio: VPaCrbAcMdOx, wherein A represents at least one metal selected from the group consisting of alkali metals and alkaline earth metals; M represents at least one element selected from the group consisting of Ti, Zr, Hf, La, Ce, Nb, Mo, W, Co, Zn, Fe, Ni, B, Sb, Bi, As, Ga, Ge, Sn, and In; in the XRD spectrum of the catalyst, diffraction peaks are present at 2?=27.8±0.5° and 2?=13.8±0.5°, and the ratio of the height (I1) of the diffraction peak at 2?=27.8±0.5° to the height (I2) of the diffraction peak at 2?=13.8±0.5° is 3.5-6, i.e. I1:I2=3.5-6.

Abstract: A method for separating dimethyl carbonate from methanol includes subjecting a raw material containing dimethyl carbonate and methanol to extractive distillation. The extractant contains an ionic liquid and a compound having a general formula of CH3O(CH2CH2O)nCH3, n being an integer of 2-8. The ionic liquid is an imidazole ionic liquid, a pyridine ionic liquid, or a mixture thereof.

Abstract: This invention relates to a surfactant composition, production and use thereof in tertiary oil recovery. The present surfactant composition comprises a cationic surfactant and an anionic-nonionic surfactant, and exhibits significantly improved interfacial activity and stability as compared with the prior art. With the present surfactant composition, a flooding fluid composition for tertiary oil recovery with improved oil displacement efficiency and oil washing capability as compared with the prior art could be produced.

Abstract: A fluidized-bed catalyst suitable for the production of halogenated aromatic nitriles includes an active component and a support. The active component is a complex having the following composition expressed in atomic ratio: VPaCrbAcMdOx, wherein A represents at least one metal selected from the group consisting of alkali metals and alkaline earth metals; M represents at least one element selected from the group consisting of Ti, Zr, Hf, La, Ce, Nb, Mo, W, Co, Zn, Fe, Ni, B, Sb, Bi, As, Ga, Ge, Sn, and In; in the XRD spectrum of the catalyst, diffraction peaks are present at 2?=27.8±0.5° and 2?=13.8±0.5°, and the ratio of the height (I1) of the diffraction peak at 2?=27.8±0.5° to the height (I2) of the diffraction peak at 2?=13.8±0.5° is 3.5-6, i.e. I1:I2=3.5-6.

Abstract: The present invention relates to a process for preparing an aromatic hydrocarbon, and processes for producing p-xylene and terephthalic acid. The process for producing said aromatic hydrocarbon comprises a step of contacting an olefin with a diene in the presence of a catalyst to produce an aromatic hydrocarbon, which is characterized in that, at least a part of said olefin is substituted with dienophile. The reaction pressure can be reduced and the xylene selectivity can be increased with the improvement of the present invention.

Abstract: Provided is a catalyst for preparing cumene and use thereof. The catalyst provided includes a carrier and an active ingredient. The active ingredient includes: ingredient (1), which is palladium element; and ingredient (2), which is one or more selected from a group consisting of alkali metal elements, alkaline earth metals and molybdenum element. When the catalyst is used for preparing cumene by ?-methyl styrene hydrogenation, AMS conversion rate is high, and a product cumene has high selectivity.

Abstract: This invention relates to a surfactant composition, production and use thereof in tertiary oil recovery. The present surfactant composition comprises a cationic-nonionic surfactant and an anionic surfactant, and exhibits significantly improved interfacial activity and stability as compared with the prior art. With the present surfactant composition, a flooding fluid composition for tertiary oil recovery with improved oil displacement efficiency and oil washing capability as compared with the prior art could be produced.

Abstract: The present invention relates to a process for producing aromatics, a process for producing p-xylene and terephthalic acid, and a device for producing aromatics. The process for producing aromatics at least comprises a step of producing C8 olefin from a compound having a lactone group and a step of producing aromatics from the C8 olefin. The process for producing aromatics has the characters of high yield of aromatics and high selectivity to xylene.

Abstract: This invention relates to an anionic-cationic-nonionic surfactant as substantially represented by the formula (I), production and use thereof in tertiary oil recovery. The anionic-cationic-nonionic surfactant of this invention exhibits significantly improved interfacial activity and stability as compared with the prior art. With the present anionic-cationic-nonionic surfactant, a flooding fluid composition for tertiary oil recovery with improved oil displacement efficiency and oil washing capability as compared with the prior art could be produced. In the formula (I), each group is as defined in the specification.

Abstract: The present invention relates to a process for producing aromatics, p-xylene and terephthalic acid. The process for producing aromatics comprises a step of contacting an oxygen-containing raw material with an aromatization catalyst, under aromatization reaction conditions, to produce aromatics. The process for producing aromatics has an advantage of high yield of carbon as aromatics.

Abstract: The present invention relates to a molecular sieve having the SFE structure, a process for producing same and use thereof. The process includes a step of crystallizing a mixture comprising a first oxide source, a second oxide source, an organic template and water to obtain a molecular sieve having the SFE structure, wherein the organic template is preferably 4-dimethylamino pyridine. As compared with the prior art, the process exhibits such merits as significantly reduced crystallization duration.

Abstract: The present invention relates to an SCM-11 molecular sieve, a process for producing same and use thereof. The molecular sieve has an empirical chemical composition as illustrated by the formula “the first oxide·the second oxide”, wherein the ratio by molar of the first oxide to the second oxide is more than 2, the first oxide is silica, the second oxide is at least one selected from the group consisting of germanium dioxide, alumina, boron oxide, iron oxide, gallium oxide, titanium oxide, rare earth oxides, indium oxide and vanadium oxide. The molecular sieve has specific XRD pattern, and can be used as an adsorbent or a catalyst for converting an organic compound.

Abstract: An apparatus for recycling propylene includes a first propylene recovery column, a flash tank, a second propylene recovery column, and a depropanizing column. The apparatus can effectively solve the problem of high power consumption in the prior art, and can be used for the industrial manufacturing of propylene recovery from a propylene oxide apparatus. A process for recycling and refining propylene also is described.