Eureka-AI is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Eureka AI

405results about How to "Low operating cost" patented technology

System and method suitable for optimizing linehaul operations

The linehaul optimization algorithm is a hybrid algorithm incorporating the basic structure of the Hungarian Assignment algorithm or equivalent and an improvement heuristic. However, in this particular case there is not a direct application of the existing, well-known Hungarian Assignment algorithm or equivalent in conjunction with a heuristic. The structure of the assignment model being used here is based on the Hungarian Assignment algorithm or equivalent but has been revised and enhanced to identify systematically (by using grouping) a number of equivalent optimal solutions (that give the same optimal, minimum cost for a particular iteration). A heuristic is then used to identify the ‘best’ optimal solution, of the many identified, that would contribute the most incremental cost reduction in future iterations of the heuristic. There is no method at present that finds all possible combinations using the Hungarian Assignment algorithm or equivalent because for most applications any optimal solution is sufficient. However, this optimization model uses an iterative procedure where the outcome of each iteration affects the next iteration significantly and a simple application of the original Hungarian Assignment algorithm or equivalent is not acceptable and does not provide the overall optimum. At each iteration, a leg assignment is made (where a trailer is moved over more than one leg) or a reassignment is made to move a trailer in a different time period by either an owner-operator (i.e. company) tractor or a broker (i.e. outside company) tractor. Furthermore, the original Hungarian Assignment algorithm or equivalent is not designed to solve a scheduling problem; it is designed to solve an assignment problem. In other words the algorithm has been revised and combined with a heuristic to solve a scheduling problem.

Degassing technique for liquid sulfur

The invention provides a degassing technique for liquid sulfur. The degassing technique can be used for solving the technical problems of the prior art that local condensation easily occurs in a bubbler, the bubbler is easily blocked and a degassing effect is unstable. The degassing technique comprises the following steps: A) entering into a degassing section after sealing the liquid sulfur, utilizing a liquid sulfur degassing pump to pressurize and send the liquid sulfur into a gas-stripping degassing column arranged in the degassing section, and circulating the liquid sulfur inside and outside the gas-stripping degassing column; B) heating compressed air and then introducing the compressed air into a bubbling device on the lower part of the gas-stripping degassing column, contacting the compressed air with the liquid sulfur in the gas-stripping degassing column, removing H2S dissolved in the liquid sulfur and burning the removed H2S after sending the removed H2S to a tail gas incinerator or an acid gas combustion furnace; and C) after overflowing the degassed liquid sulfur from the degassing section to a storage section, sending the liquid sulfur by a liquid sulfur end product pump. The degassing technique can be used for reducing the content of H2S in the liquid sulfur, preventing the bubbling device from being blocked, promoting the liquid sulfur degassing effect and achieving the content of the H2S in the liquid sulfur being less than 10ppm.

Hydrolyzation separation apparatus for methyl acetate and technique

The invention provides a hydrolyzing and separation device of methyl acetate and a technique method thereof, which more particularly relates to a novel technique to catalyze and hydrolyze methyl acetate by a reaction bulkhead distillation tower, which can organically combine reaction process, product separation and recovery of no reactant into the tower. A separator extending from the upper part of the tower to the lower part of the tower is arranged on the vertical direction in the conventional distillation tower, the upper part of one side of which is covered and the other side of which is filled with a catalyst; therefore, the inner space of the reaction bulkhead distillation tower is divided into five regions with different functions. The hydrolyzing and separation device of methyl acetate can fully unleash the advantage of bulkhead tower and reaction distillation, and can cause hydrolysis reaction, product separation and recovery of non reactant to be realized in the same tower. The device provided by the invention and the technique process thereof can obtain the methyl acetate with 60 percent to 99.99 percent hydrolysis rate and products with high purity, restrain side effect effectively, reduce the volume of equipment markedly, simplify process, and reduce energy consumption and operation cost.

Coal tar hydrogenating modified method by two-stage method

ActiveCN101307257AGood Ring Opening Cracking PerformanceGood nitrogen resistanceTreatment with hydrotreatment processesGas phaseDistillation
The invention discloses a two-stage method coal tar hydro-upgrading method. Coal tar is subject to the atmospheric distillation and/or the reduced pressure distillation and is cut into coal tar light cut and coal tar heavy cut; after the coal tar light cut and optional distillate oil are mixed with hydrogen, the mixture enters a first hydrogeneration reaction zone and performs the contact reaction with hydrorefining catalyst; gas phase impurities of a reaction effluent is removed through an intermediate flash distillation column or a high-pressure stripping tower, and then the reaction effluent enters a second hydrogeneration reaction zone to perform the contact reaction with the hydro-upgrading catalyst or the hydrocracking catalyst; and the obtained reaction effluent is cooled, separated and fractionated to produce diesel fraction and naphtha cut. The invention provides a clean and effective coal tar processing and utilizing method, the coal tar light cut is hydro-upgraded to produce diesel oil for vehicles, the sulfur content of the obtained diesel product is less than 50 mu g/g, the content of polycyclic aromatic hydrocarbon is less than 11 weight percent, and the diesel oil cetane number of the product is improved by not less than 20.

Method for directly liquefying coals with function of maximizing utilization of liquefied residues

The invention relates to a method for directly liquefying coals with a function of maximizing utilization of liquefied residues. The method comprises the following technical steps: preparing coal paste; carrying out hydrotreating and liquefaction on the coal paste; carrying out oil separation treatment on the obtained oil product; carrying out upgrading and hydrotreating on the obtained product; carrying out hot extraction on the residues and then carrying out solid-liquid separation on the residues; and recovering the solvent; and carrying out hydrotreating treatment on the mixture of heavy oils and asphalt materials so as to obtain the final product, then taking the heavy oils as recycled solvent to prepare the coal paste, and the like. The method provided by the invention has the advantages that because of organically combining the liquefaction process and the residue extraction, the utilization of liquefied residues is maximized, the conversion rate of coal is improved, the yieldsof light and middle oils subjected to coal liquefaction are improved by 10 to 60 percent, and the quality of oil is improved, thereby greatly enhancing the economic benefits of direct coal liquefaction plants and improving environment protection; and the method provided by the invention has important economic and social significances, and can widely be applied to the field of coal direct liquefaction.

Combined hydrogenation method for mineral oil and animal and vegetable oil

The invention relates to a combined hydrogenation method for mineral oil and animal and vegetable oil. In two hydrogenation reaction zones, high-sulfur mineral diesel oil distillate and animal and vegetable oil are respectively used as the raw materials and hydrogenated under different conditions, and the products are mixed to obtain a low-surfur or an even ultralow-surfur diesel oil product, wherein the gas-phase compound flow obtained in the first hydrogenation reaction zone is cycled to the second hydrogenation reaction zone, and the gas-phase compound flow obtained in the second hydrogenation reaction zone is cycled to the first hydrogenation reaction zone. The method can process high-sulfur mineral diesel oil distillate and vegetable oil. The method can be used for obtaining a clean diesel oil product with low sulfur content and high content of polycyclic aromatic hydrocarbon and cetane number under mild operating conditions. The invention saves the equipment and the operating procedure for regular sulfur supplement for hydrogenation of the vegetable oil, reduces the effect of water generated by the vegetable oil hydrogenation reaction on the activity of the hydrogenation catalyst, and prolongs the device operation period.

Blocking remover for reservoir of oil well

ActiveCN102775975ARestore production capacityIncrease contactDrilling compositionPhenolPetroleum
The invention discloses a blocking remover for a reservoir of an oil well. The blocking remover is applied to the technical field of oil extraction in an oil field, comprises an agent A and an agent B, and is characterized in that the weight percentage of the agent A is 25-35%; the weight percentage of the agent B is 65-75%; the agent A comprises the following components by weight: 45-50% of petroleum mixed xylene, 1-2% of nonyl phenol polyoxyethylene (4) ether, and the balance of 0# diesel oil; the agent B comprises the following components by weight: 6-10% of glacial acetic acid or sulfamic acid, 2-2.5% of ammonium bifluoride, 2% of ammonium chloride, 1-2% of citric acid, 1.5-2% of corrosion inhibitor 7801, 3-5% of tertiary butanol, 0.5-1% of octyl phenol polyoxyethylene (10) ether and the balance of water. The blocking remover has the following effects that: the agent A and the agent B are respectively prepared so as to be beneficial to storing the blocking remover for a long time, the agent A of the blocking remover has strong dissolving capacity on crude oil heavy components, such as wax colloid asphalt, and the washing oil efficiency on oil sand is more than 90%. The dissolving rate of the agent B of the blocking remover on carbonate is more than 80%, and the corrosion speed on N80 steel is low and is smaller than 2 g/m<2>.h.

Method for manufacturing nano calcium carbonate from high-concentration carbon dioxide industrial exhaust gases

The invention provides a method for manufacturing a nano-grade calcium carbonate from high-concentration carbon dioxide industrial exhaust gases, which comprises the following steps: (1) adding a crystal nucleus forming accelerator into a suspension of a calcium hydroxide; (2), introducing a gas containing 50 to 100 volume percent of a carbon dioxide, adding a dispersant when a carbonization rate is over 80 percent, and continuously introducing the gas for 10 to 20min when the pH value of the suspension is reduced to between 6.5 and 7.0, wherein the final temperature of a reaction slurry liquid is 45 to 70 DEG C; and (3) adding the aqueous solution of a cladding agent into the suspension of the calcium hydroxide, wherein a cladding and activating time is 1 to 2h, and then collecting the nano-grade activated calcium carbonate from the reaction product. The method of the invention greatly reduces the equipment and operation costs, quickens the carbonization reaction, saves the time of the carbonization reaction and energy, reduces the energy consumption, increases the oversaturated concentration of the calcium carbonate, and finally generates narrowly distributed nano-grade calcium carbonate particles the grain size of which is uniform.

Alkylation reactor and alkylation reaction method

The invention discloses an alkylation reactor and an alkylation reaction method. The reactor comprises a reactor tube body, closure heads, a revolving bed, a charging pipe, a charge distribution pipe, a discharging opening, a circulating cooling gas inlet, a circulating cooling gas outlet and a circulating cooling gas refrigeration system, wherein a shell body is formed by the reactor tube body and the closure heads, the revolving bed is arranged at the internal middle part of the shell body and is connected with a driving device through a revolving shaft, the charge distribution pipe is arranged in a hollow tube structure of the center of the revolving bed and is communicated with the charging pipe, the discharging opening is formed in the lower part of the shell body of the reactor, a sealing member is arranged between the upper part of the revolving bed and the shell body, static components and revolving components are sequentially arranged at the radial outer side of the revolving bed, and the circulating cooling gas refrigeration system is located between the circulating cooling gas inlet and the circulating cooling gas outlet. According to the alkylation reaction method disclosed by the invention, alkylation reaction is carried out by taking concentrated sulfuric acid as a catalyst and taking isobutane and alkene as raw materials. According to the alkylation reactor and the alkylation reaction method, the alkylation reaction can be carried out at relatively low temperature, the acid consumption is low, the quality of products is high, and the equipment scale is small.

Oil gas recovery device and method

The invention relates to an oil gas recovery device, comprising an anti-exposure centrifugal fan, a cold box, a refrigeration unit, a liquid storage tank, a liquid return pump, an oil storage tank, a first adsorption tank, a second adsorption tank, a vacuum pump, a nitrogen making unit, and Including the PLC automatic control system; the oil and gas are first transported into the cold box by the anti-exposure centrifugal fan, and the liquid oil condensed by the pre-cooling part, the first-level condensing part and the second-level condensing part of the cold box is sent to the liquid storage tank, and then returned to the storage tank. The liquid pump is sent to the oil storage tank for recovery; the oil and gas from the secondary condensing part are sent to the first adsorption tank after the heat is raised by the pre-cooling part, and the first adsorption tank and the second adsorption tank are cycled for adsorption and desorption. When the first adsorption tank or the second adsorption tank enters the desorption stage, the vacuum pump is turned on, and when the vacuum degree of the adsorption tank reaches the set value, the hot nitrogen gas is turned on to desorb the oil and gas with the hot nitrogen gas. By utilizing the advantages of the condensation method and the adsorption method to optimize the combination, the purpose of reducing energy consumption and eliminating potential safety hazards is achieved.
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products