614 results about "Condensation point" patented technology

The invention relates to a high-efficient environment-friendly composite antifreezing emulsion paraffin remover and inhibitor, which mainly solves problems of oil well large operation load caused by severe paraffin precipitation of high paraffin-containing oil wells at alpine regions, and compromising oil well yield caused by short hot washing period. The paraffin remover and inhibitor comprises a main agent of A agent system, and an auxiliary agent of B agent system, wherein the main agent of A agent system comprises the following component by weight: 1-3% of oil-soluble high-molecular polymer, 40-60% of aromatic hydrocarbon organic solvents, 10-20% of low carbon alcohol, 3-10% of composite emulsifiers, and 10-30% of water; the auxiliary agent of B agent system comprises the following component by weight: 7-15% of acid electrolytes, and 85-93% of water; the ratio of the main agent of A agent system to the auxiliary agent of B agent system is 100:0.8-1.2. The high-efficient environment-friendly composite antifreezing emulsion paraffin remover and inhibitor can effectively remove paraffin and inhibit paraffin, reaches the purposes of reducing oil well operation load and prolonging well washing period, has a low condensation point, and thus is especially suitable for winter paraffin removal at alpine regions.

The invention is applicable to the technical field of refrigerating and provides a method and device for preventing condensation of a refrigerating device. The method includes: calculating the current condensation point temperature according to the current environment temperature and humidity; judging whether condensation risks exist or not according to the current condensation point temperature; if so, performing condensation prevention. By the method, an air outlet of an air conditioner condensates easily in the prior art can be solved.

The invention discloses a hydro-cracking method for blending ethylene bottom oil, which is different from the method for processing the conventional ethylene bottom oil and comprises the following steps: blending an ethylene bottom oil light end into a conventional hydro-cracking raw material for hydro-cracking, in the presence of hydrogen, sequentially contacting the ethylene bottom oil light end with a hydro-guard catalyst, a hydro-refining catalyst, a hydro-residue carbon removing catalyst and a hydro-cracking catalyst; separating an effluent of hydro-cracking reaction to obtain light fuel oil. The method of the invention adopts a method of grading the hydrogenation catalyst, can process the ethylene bottom oil light end and produce diesel oil having a high cetane number and a low condensation point and a naphtha having high arene, and is not obviously changed in a BMCI value of tail oil and a smoke point of a jet fuel when compared with the conditions before blending the ethylene bottom oil.

The invention relates to a catalyst used for hydrogenation ring opening of polycyclic aromatic hydrocarbon and advanced hydrogenation dearomatization and isomeric pour point depression of diesel oil, and a preparation method thereof. The catalyst is formed by using modified H-Beta molecular sieve with a high silica-alumina ratio and an inorganic oxide as a carrier, and precious metal Pt, Pd or Ir as an active component. The catalyst has a high metal dispersion ability, and has suitable acid kind, acid strength and pore structure. The catalyst can inhibit advanced cracking, and promotes the selective ring opening of aromatic hydrocarbon and product isomerization. The catalyst is suitable for advanced hydrogenation saturation of diesel oil with low sulfur and nitrogen content, selective ring opening and isomerization, can reduce the aromatic hydrocarbon content in the diesel oil, can improve the cetane number of oil products, and can reduce the condensation point of the diesel oil.

The invention provides an air-conditioner defrosting method. The method comprises the following steps that a, an air-conditioner operates in a heating mode; b, a defrosting temperature sensor on a heat exchanger is used for measuring the temperature T of a coil pipe, when the T is lower than the temperature Tes of a condensation point, an outdoor unit enters in a defrosting mode; c, an outdoor fan stops rotating, an ultrasonic transducer on the heat exchanger is turned on, and a frost layer on the heat exchanger is vibrated to be float frost; d, the float frost is actively removed to enable the float frost to disengage from the heat exchanger; e, when the defrosting temperature sensor on the heat exchanger detects that the temperature T of the coil pipe is higher than the temperature Tes of the condensation point, the ultrasonic transducer stops operation, the float frost active removing operation is stopped, the outdoor fan rotates forwardly, and the defrosting process is ended. In the heating operation process, the ultrasonic transducer is used for vibrating the frost layer into the float frost capable of falling off easily, then the float frost is actively removed, the frost layer can be quickly and effectively removed, the air-conditioner continuous operates without stopping, the normal heating operation of the system is not influenced, and the system energy efficiency can be better improved.

The invention provides a method for preparing a diesel oil component or jet fuel component by using animal and plant oil. The method comprises the following steps of: (1) dividing the animal and plant oil into at least two parts, introducing the at least two parts of animal and plant oil to a plurality of catalyst beds of a first hydrogenation reactor, and enabling the at least two parts of animal and plant oil and a hydrodeoxygenation catalyst to contact and react to obtain n-alkanes with the carbon number of 8-24; (2) filling an isomerization catalyst in a second hydrogenation reactor, introducing a reaction product obtained in the step (1) to the second hydrogenation reactor, and reducing a condensation point after isomerization reaction to obtain a diesel oil component; or, (3) filling a selective cracking catalyst in the second hydrogenation reactor, introducing the reaction product obtained in the step (1) to the second hydrogenation reactor, and then, carrying out selective hydrocracking and isomerization to obtain a jet fuel blending component. The method provided by the invention is high in jet fuel yield; and the prepared jet fuel blending component is good in quality and can be mixed with the traditional petroleum-based jet fuel according to any proportion so as to be an excellent blending component.

The invention relates to a hydrogenation method for reducing the condensation point of diesel oil, comprising the following steps of: mixing diesel oil material and hydrogen for full fraction hydrogenation in a first hydrogenation area; flashing reaction effluences in a heat high-pressure separator; flashing the lighter components of the diesel oil out of the heat high-pressure separator, whereinliquid-phase material flows obtained by the heat high-pressure separator are the heavy components of the diesel oil; mixing the liquid-phase material flows with the hydrogen, and putting into second hydrogenation areas including a pour point depression reaction area and a post-refining area, for pour point depression reaction; mixing obtained gas-phase material flows of the heat high-pressure separator with reaction effluences of the second hydrogenation area, and putting into a sequential separation and fractionation system so as to obtain diesel oil products. The invention can enhance the yield coefficient of the diesel oil products with low pour point and also achieve the purpose of desulfurizing, denitriding and prolonging the service life period of a pour point depression catalyst.

The invention discloses a hydroisomerization/cracking catalyst and a preparation method thereof. The catalyst is composed of an acidic isocraking carrier and a metal active component loaded on the acidic isocraking carrier; the acidic isocraking carrier is composed of a ZSM-22 molecular sieve and an amorphous oxide; and the mass ratio of the acidic isocraking carrier to the metal active component (by metal oxide and/or metal element) is 70-99.9:0.1-30. The preparation method of the catalyst comprises the following steps: 1, mixing the amorphous oxide with the ZSM-22 molecular sieve, carrying out adjusting and kneading molding by using an acid solution, and drying and roasting to obtain the acidic isocraking carrier; and 2, dipping the acidic isocraking carrier in an aqueous solution of a soluble salt of the active metal component, and drying and roasting to obtain the catalyst. The catalyst can crack high-melting-point long-chain normal paraffins into lightweight diesel oil during hydroisomerization, generates a small amount of gases and naphtha, and effectively reduces the condensation points of products.

Embodiments of the disclosure generally relate to a method of processing a semiconductor substrate at a temperature less than 250 degrees Celsius. In one embodiment, the method includes loading the substrate with the deposited film into a pressure vessel, exposing the substrate to a processing gas comprising an oxidizer at a pressure greater than about 2 bars, and maintaining the pressure vessel at a temperature between a condensation point of the processing gas and about 250 degrees Celsius.

The invention belongs to the technical field of environment protection of oil and gas fields and particularly provides an oil-base drilling cuttings thermal analytical treatment method. The method comprises the following main steps: conveying the oil-base drilling cuttings after pre-treatment to a processing unit; heating to raise the reaction temperature to the volatilization temperature of hydrocarbon in the components in the drilling cuttings; then, maintaining for a certain standing time till oil gas is completely volatilized; after treatment, storing the drilling cuttings by virtue of a discharge device for discharging; feeding the oil gas into a recovering and separating unit by virtue of an exhaust device; recovering components with different condensation points in different condensation recovery units; and maintaining the recovered oil unchanged for further preparing an oil-base drilling fluid. The method solves the defects and shortcomings of other methods well. By adopting the oil-base drilling cuttings thermal analytical treatment technology, the oil content of the drilling cuttings is low (less than 1%), so that the discharge requirement is satisfied. The method provided by the invention further achieves the purposes of treating the oil-base drilling cuttings and recycling resources while the problem of environmental pollution is solved.

The invention discloses a slime reducing agent suitable for heavy oil wells with different mineralization and an application, which belongs to the oil field chemical technology field. The slime reducing agent is composed of Bacillus licheniformis, bacillus subtilis and bacillus thuringiensis, and is cultured for 24 hours under the condition that the temperature is 30-70 DEG C, pH value is 5-10, mineralization is 1000-120000mg/L, and the pressure is 0-30MPa, thalline concentration of each bacterial classification can reach 108-109/Ml, and the breeding capability is strong. The slime reducing agent can degrade the crude oil heavy components, metabolize a biological surface active agent and biogas, so that crude oil viscosity is reduced, and then stable yield increase of the heavy oil wells can be ensured. According to the test, good yield increase effect can be achieved at on-site oil well under the condition that mineralization is 6000-83000mg/L, pH value is 7-8.6, and the temperature is 40-60 DEG C, daily oil production is increased by 24-83%, pump efficiency is increased by 4-10%, the crude oil viscosity is decreased by 50-65%, output liquid surface tension is decreased by 20%-30%, and the crude oil condensation point is decreased to 1-3 DEG C.

The invention discloses a high value utilization method of gutter oil. The method comprises the following steps: purifying and preprocessing gutter oil, subjecting gutter oil to catalytic cracking, and separating and refining the products. The gutter oil is preprocessed in a clarifying tank, then filtered by a filter, washed by hot water, demulsified, desalted, dehydrated, and purified. Then, gutter oil exchanges heat with reaction products, and is delivered to a reactor to carry out catalytic cracking. The reaction products are separated by a separator, the waste heat is recycled, and fuel diesel oil, gasoline, and light hydrocarbon gas are obtained. The method has the following advantages: (1) the gutter oil is effectively converted into valuable resources such as diesel oil, gasoline, and the like, and the products have the advantages of high thermal efficiency, and low pollution environment; (2) the produced diesel oil has the advantages of good color value, high calorific value, low condensation point, and high flash point and meets related national and industrial standards; (3) the yield of liquid oil is high, the coking degree is low during the cracking process, the whole technology is compact, the efficiency is high, and the method can be applied to industry easily.

The invention discloses an animal and vegetable oil-catalytic diesel oil combined hydrogenation method. The animal and vegetable oil-catalytic diesel oil combined hydrogenation method comprises following steps: countercurrent contact of animal and vegetable oil with hydrogen is carried out in a hydrogenation heterogeneous reactor, and hydrofinishing and condensation point reduction reaction are carried out; an obtained liquid effluent is mixed with catalytically cracked diesel oil, an obtained mixture is delivered into a hydrogen mixing tank for hydrogen mixing, and then is delivered into a liquid phase hydrogenation reactor for hydrofinishing; a part of obtained hydrofined diesel oil is cycled to a lower catalyst bed layer of the hydrogenation heterogeneous reactor. On the one hand, hydrogenation heterogeneous condensation point reduction of the animal and vegetable oil is capable of increasing hydrogen dissolving amount of the liquid phase hydrogenation reactor, and on the other hand condensation point of the animal and vegetable oil is reduced, the animal and vegetable oil is high in cetane value, and combined hydrogenation of the animal and vegetable oil with catalytic diesel oil is capable of solving a problem that the cetane value is too low. The animal and vegetable oil-catalytic diesel oil combined hydrogenation method is capable of widening raw material sources for refinery diesel oil production, and also providing a method for processing of low-quality catalytic diesel oil.

The invention discloses a diesel oil pour point depressant composition and its preparation method. The diesel oil pour point depressant composition, i.e. a diesel oil pour point depressant composition formed by mixing acetic ester organic solvents with a pour point depressant, comprises the following raw materials by mass percent: 0-20% of methyl acetate, 0-20% of ethyl acetate, 0-10% of propyl acetate, 0-30% of butyl acetate, and 20-80% of the pour point depressant. The preparation method consists of: mixing all the raw materials and then conducting stirring in water bath at a constant temperature of 50DEG C for 20min, and controlling the rotation speed at 150r/min, thus obtaining the diesel oil pour point depressant composition. Adding of the obtained diesel oil pour point depressant composition into commercially available 0# diesel oil can make the cold filter plugging point of the diesel oil reduced by 5-11DEG C and the condensation point reduced by 6-10DEG C. The diesel oil pour point depressant composition provided in the invention enhances the dispersion effect of pour point depressants on wax crystals, and improves the low temperature fluidity of diesel oil.

The invention discloses a sulfide removal method in the petrol and diesel through ionic liquid extraction, which is characterized by the following: using ionic liquid as extractive solvent; proceeding extraction at atmosphere pressure, 5-6 deg.c; applying ionic liquid from alkylate hydrohalogenate, imidazolium or imidazolium alkylation, pyridine or pyridine alkylation, sulfonium or sulfonium alkylation as positive ionic source material; taking metal halide as ionic liquid of negative ionic source. The invention can improve desulfurizing effect without decreasing petrol octane value and diesel condensation point, which can meet the increasingly harsh environmetal standard.

The invention discloses a strong emulsibility microbe wax cleaning and preventing bacterial agent and an application, which belongs to the oil field chemical technology field. The wax cleaning and preventing bacterial agent mainly comprises pseudomonas aeruginosa and geobacillus sp, has strong emulsification capability, and is capable of dispersing crude oil, promoting crude oil to flow, changing adherence force of borehole wall, preventing the accumulation of wax crystal on the borehole wall, and playing the paraffin inhibition and wax cleaning effects. By increasing the initial application amount of the bacteria liquid and prolong the well closing time, a stable paraffin inhibition zone can be formed due to adhesion of bacteria on borehole wall, near wellbore formation can be cleaned, and the paraffin inhibition and oil increase effects can be increased. After on-site enforcement, the well cleaning and chemical paraffin inhibition works can not be carried out in recent half year in the test wells, so that the wax cleaning and preventing bacterial agent has good paraffin inhibition effect in the well. The oil production is increased by about 30% daily, pump efficiency is increased about 10%, the surface tension of the output liquid is decreased to 20-25%, and the crude oil condensation point is decreased by 1-3 DEG C.

The invention discloses a preparation method for a middle oil type hydrocracking catalyst carrier. The carrier is composed of a modified Y molecular sieve, a multi-pore beta molecular sieve, large-pore aluminum oxide, a binder and an extrusion assistant agent, wherein the Y molecular sieve is obtained by hydro-thermal treatment assisted by organic acid, high crystallinity and low cell parameter are maintained, and rich secondary pore canals and uniform medium and strong acid centers are contained; the multi-pore beta molecular sieve is synthesized by a soft template method, is high in specific surface area and high in pore volume and has abundant meso pores. The catalyst prepared by VI B and VIII group metal oxides on the hydrocracking catalyst carrier which is prepared by the method has the advantages of high hydrocracking activity, strong anti-nitrogen performance, good stability, high middle oil selectivity, low condensation point of diesel and the like.

Embodiments of the disclosure relate to an apparatus and method for annealing semiconductor substrates. In one embodiment, a batch processing chamber is disclosed. The batch processing chamber includes a chamber body enclosing a processing region, a gas panel configured to provide a processing fluid into the processing region, a condenser fluidly connected to the processing region and a temperature-controlled fluid circuit configured to maintain the processing fluid at a temperature above a condensation point of the processing fluid. The processing region is configured to retain a plurality of substrates during processing. The condenser is configured to condense the processing fluid into a liquid phase.

The invention belongs to a chemical technology and the technical field of a renewable energy source, and relates to a method for producing second-generation biodiesel by hydrogenation production of illegal cooking oil. The method comprises the following steps: firstly, carrying out pretreatments such as filtering, dewatering and desalting, on the collected illegal cooking oil; respectively carrying out reaction, such as hydrodeoxygenation, hydrogenation decarboxylation and hydrogenation decarbonylation, in the presence of a transition metal phosphide catalyst so as to obtain the second-generation biodiesel. By adopting the method, the noble metal property and excellent hydrogenation performance of the transition metal phosphide are fully utilized, the illegal cooking oil is directly converted into oxygen-free fat alkanes, no byproduct for polluting the environment is generated, meanwhile, the method has the advantages of simple process, is clean and environmental, low in energy consumption and the like, the obtained diesel is high in cetane number and low in condensation point, has good economic and social benefits, and has important practical significance on growing fuel requirements.

The environment friendly energy-efficient heat conduction oil of the present invention is composed of 90-95% of base oil and 10-5% of other additives. The invention has advantages of low viscosity, low condensation point, high boiling point, low volatility, low acid value, free of smell, non-toxicity, high viscosity index, high flash point, high initial boiling point, high specific heat capacity, low temperature flow performance, material compatibility of system, high tepid stability, antioxidation stability, anti-corrosivity, antirust performance, peace and quiet dispersion performance, high heat conduction coefficient, biodegradability, and other performances. The index of each performance accords with the usage requirement, and can satisfy the technology requirements of the GB23971-2009 heat conduction oil with L-QB, L-QC, L-QD quality grade specifications and the performance requirements of those with temperature grades: 280, 300, 310, 320, 330, 340 and 350.

The invention discloses a diesel oil anti-wear agent. The diesel oil anti-wear agent is prepared from fatty acid, urea and ethanol in a mass ratio of 10: (4.8-5): 10 through purification of the fatty acid. The saturated fatty acid content of the diesel oil anti-wear agent disclosed by the invention is less than 2%, the yield of a product is more than 80%, the condensation point of the product is less than -12 DEG C, the cloud point of the product is less than -8 DEG C, the acid value of the product is 190, and the diesel oil anti-wear agent has good low-temperature stability, greatly improves the lubricity of diesel oil, reduces the wear degree of an oil injection pump, prolongs the service life of an engine, does not corrode metal and has good compatibility with diesel oil.