616 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 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 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 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 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 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.