131results about How to "Low one-time investment cost" patented technology

The invention relates to a catalyst for synthesizing ethylene amine and a method for preparing ethylene amine. The catalyst comprises 1-40 wt% of a main active component, 0.1-20 wt% of an auxiliary agent, and a carrier processed by ammonification, wherein the main active component is Ni or Co, the auxiliary agent comprises one ore more of Fe, Cu, Ru, Re, K, Zn, B and other metal or oxides, and the ammonified carrier is ammonified SiO2 or Al2O3. The catalyst is characterized in that the used carrier needs to be ammonified. The ethylene amine product synthesized in hydrogen environment by using the catalyst of the invention to carry out ethanolamine ammonification reaction has high activity, high selectivity and stability.

The invention provides a catalyst for preparing a high-quality gasoline fraction by virtue of syngas high selectivity and a preparation method thereof. The catalyst comprises the following components in percentage by weight: 1-30% of metallic cobalt, 0.01-5% of assistant elements and the balance of molecular sieve. The catalyst has good selectivity to isoparaffin with 5-11 carbon atoms and quite low selectivity to the waxy hydrocarbons with more than 20 carbon atoms, so that the catalyst can be used for preparing high-quality gasoline fuels, and the catalyst carbon deposition can be avoided or obviously reduced. In addition, the invention further provides the preparation method of the catalyst.

The invention relates to a method for preparing propane diamine by taking propylene glycol and liquid ammonia as raw materials. Propylene glycol and liquid ammonia are mixed in a certain ratio and are pumped into a reactor by virtue of a pump, and reaction is carried out in presence of a catalyst and hydrogen. The method for preparing the propane diamine by taking the propylene glycol and liquid ammonia as the raw materials has the advantages that a novel catalyst is adopted, catalytic performance is excellent, and long-time operation can be easily carried out; propylene glycol is subjected to hydroamination for producing a propane diamine product at lower reaction pressure, and reaction conditions are adjusted and changed, so that composition of the product can be flexibly adjusted and changed, selectivity of a target product is improved, a reaction process is simple, one-time investment of a production unit and production cost are reduced, a reaction product and a catalyst can be simply separated, and large-scale continuous industrial production can be easily realized.

The invention relates to a catalyst used for synthesis of hexanediamine. The catalyst is composed of three parts, i.e., a main active component, an auxiliary agent and a carrier, wherein the main active component is Ni or Co; the auxiliary agent is one or more selected from the group consisting of metals or oxides like Fe, Cu, Ru, Re, K, Zn and B; the carrier is selected from SiO2 or Al2O3; the weight of the main active component accounts for 1 to 40% of the total weight of the catalyst; and the weight of the auxiliary agent accounts for 0.1 to 20% of the total weight of the catalyst. The catalyst provided by the invention undergoes an ammoniation reaction of hexanediol or aminohexanol or a hexanediol/aminohexanol mixture, so a hexanediamine product is synthesized under a hydrogen condition, and high activity, selectivity and stability are shown.

The invention relates to a method for separating and purifying gamma-aminobutyric acid (GABA) from glutamine decarboxylase enzymolysis liquid. The method comprises the following steps of: delivering glutamine decarboxylase enzymolysis liquid which is abundant in GABA into a film separating system for filtering and clearing; when concentrating to 2-10 times, adding dialyzing water for dialyzing, wherein the final filtering liquid amount is 1 to 3 times of enzymolysis liquid amount; pumping filtering liquid into an ion exchange system for desalinating; delivering desalinated liquid into decolorizing resin or an active carbon column for decolorizing; concentrating decolorized clear liquid by an evaporator; and drying or crystallizing and recrystallizing to obtain a GABA product. Compared with the prior art, the separating and purifying process provided by the invention is simple and reasonable and has short procedure, and the GABA obtained by separation has high purity, shallow color, good dispersibility and high total yield; and the invention has the advantages of low running cost, high filtering precision, high concentration times, high concentration of enzyme concentrates, and thelike, is beneficial to the recycling or solidified resource utilization of the enzyme concentrates, and prevents secondary pollution.

The invention relates to a calculating method of an impedance value of a three-winding transformer based on short circuit current restraint. The method includes: firstly, a target function is set, and relations between an equivalent positive-sequence impedance XH [sigma]1 and an equivalent zero-sequence impedance XH [sigma]0 from a system to a short circuit point and system positive-sequence impedances Hx1 and Mx1, zero-sequence reactances, and transformer three-side equivalent reactances x1, x2, and x3 are established; relations between XH [sigma]1 and a high-voltage side three-phase short circuit current IHf3, a medium-voltage side three-phase short circuit current IMf3, and XH [sigma]1, XH [sigma]0 and a high-voltage single-phase grounding short circuit current IHf1, a medium-voltage single-phase grounding short circuit current IMf1 are established; a relation between a low-voltage side three-phase short circuit current ILf3 and x1, x2, x3, Hx1 and Mx1 is established; and limit values of short circuit current of each voltage grade side of a substation are set, the ranges of initial values of positive-sequence and zero-sequence impedances of each voltage grade are obtained, and the optimal parameter values of impedances at each side of the transformer are calculated. The beneficial effects of the method are that optimized design of the impedances of the transformers for various types of substations can be realized, and the applicability is high.

The invention discloses a preparing method of pnenolic aldehyde type adsorbing resin and preparing, which comprises the following steps: comprising large hole spherical (or granular) with fenol unit pnenolic aldehyde type absorbing resin, large hole spherical (or granular) with catechol unit pnenolic aldehyde type absorbing resin and large hole granular pnenolic aldehyde type absorbing resin with phloroglucine unit; choosing cavaform (or formaldehyde water solution), fenol or catechol or phloroglucine raw material to prepare large hole spherical (or granular) pnenolic aldehyde type adsorbing resin; adopting anti-phase floating polycondensation method or solution polycondensation method to synthesize under existence of special hole agent ethandiol (or glycerin); finishing synthesized reaction under existence of acid catalyst. This preparing method is simple and can finish with one step, which can simplify process and decrease cost.

The invention relates to a method for preparing polyether amine by taking polyether polyol and ammonia as raw materials. The method comprises the following steps: mixing the polyether polyol and ammonia according to a certain ratio, pumping the mixture into a reactor by a pump, and reacting in the presence of a catalyst and hydrogen. A novel catalyst is adopted in the method and composed of three parts, namely a main active ingredient, aids and a carrier subjected to ammoniated treatment, wherein the main active ingredient refers to Ni or Co; the aids refer to one or more of metals such as Fe, Cu, Ru, Re, K, Zn and B or oxides; and the carrier subjected to ammoniated treatment is selected from SiO2 or Al2O3 subjected to ammoniated treatment. The catalyst in the invention has the characteristic that the adopted carrier needs to be subjected to special ammoniated treatment. According to the method disclosed by the invention, a reaction of performing polyether polyol and hydrogen present amination to produce polyether amine is carried out, and the method achieves high activity as well as high selectivity and stability.

The invention discloses a loaded heterogeneous catalyst. The loaded heterogeneous catalyst is prepared from main active components, an assistant and a carrier or prepared from main active components and a carrier, wherein the assistant is prepared from one or two or more of elementary substances or oxides of Fe, Cu, Ru, Re, K, Zn and B, the carrier is prepared from one or two or more of graphite,activated carbon, a carbon nano tube, graphene, silicon dioxide, aluminum oxide, a molecular sieve, titanium dioxide and zirconium dioxide, and the loaded heterogeneous catalyst is prepared through anultrasonic loading method. By adopting the loaded heterogeneous catalyst for preparing 3-aminopropanol, (1) the mass space-time yield of the 3-aminopropanol is increased; (2) selectivity of the 3-aminopropanol is improved; (3) a reaction can be implemented under the low reaction pressure; (4) stability of a catalytic system is improved; and (5) process operation is easy, convenient and feasible,the one-time investment and production costs of production and subsequent separating devices are lowered, and large-scale continuous industrial production is easy to achieve.

The invention relates to a potential energy recovery system of lifting equipment and a use method under a non-stable load condition. A first oil outlet of a first electromagnetic directional valve is connected with a connecting oil port of a first accumulator unit and an oil inlet of a fourth electromagnetic directional valve, a second oil outlet of the first electromagnetic directional valve is connected with a connecting oil port of a second accumulator unit and an oil inlet of a fifth electromagnetic directional valve, the fifth electromagnetic directional valve is communicated with an oil outlet of a first hydraulic control one-way valve through a function valve assembly, and is connected with a rodless cavity oil port of a second potential energy recovery cylinder, and an oil return port of the fifth electromagnetic directional valve and an oil inlet of the first hydraulic control one-way valve are communicated with rod cavity oil ports of the first potential energy recovery cylinder and the second potential energy recovery cylinder, and are connected with a first oil return port of an oil tank. The method adopts the steps of determining the carrying load of the potential energy recovery system, and the specifications of the potential energy recovery cylinder and the accumulators; enabling the potential energy recovery cylinder to assist and push the load to move upwards; enabling a press sensor to detect the pressure of the accumulator and the carrying load of a lifting cylinder during the lifting of equipment. The system has the advantage that one part of wasted gravity potential energy can be recovered during falling.

The invention relates to a method for preparing amino alcohol from dihydric alcohol and/or polyhydric alcohol. The method comprises the following steps: mixing dihydric alcohol and/or polyhydric alcohol with liquid ammonia in a certain ratio, pumping into a reactor, and performing reaction in the presence of a catalyst and hydrogen. Due to adoption of a novel catalyst, the method is excellent in catalysis property and easy in long-time operation. As an alkamine product is produced from dihydric alcohol and/or polyhydric alcohol through hydroforming amination, the method can be achieved under relatively low reaction pressure, and the constitution of the product can be flexibly adjusted and varied by adjusting and changing reaction conditions, so that the selectivity of a target product can be improved, the reaction procedures are simple, the reaction process is environmental-friendly, and the one-time investment and production cost of a production device can be lowered; and a reaction product can be easily separated from the catalyst, so that large-scale continuous industrial production can be easily achieved.

The invention discloses a preparation method of carboxylate. The preparation method takes olefin, fatty alcohol and carbon monoxide as reaction raw materials and takes a multifunctional porous organicpolymer as a carrier-loaded palladium-based multi-phase catalyst to catalyze to the raw materials to prepare the carboxylate through olefin carbonylation one-step reaction, wherein the multifunctional porous organic polymer is prepared by carrying out dissolution heat copolymerization on a vinyl functionalized phosphine ligand and an acid group functionalized p-styrene and acidifying. According to the preparation method disclosed by the invention, the olefin conversion ratio and the selectivity of a target product carboxylate are improved; the catalyst has high catalytic activity on the reaction and the reaction is moderate; the olefin carbonylation reaction is realized under relatively moderate conditions; a catalysis system has no corrosion on equipment, is simple to prepare and belongsto an environment-friendly type catalyst. The multi-phase catalyst provided by the invention is easy to separate from the product and is recycle and utilize; the one-time investment and production cost of production and subsequent separation devices are reduced and large-scale continuous industrial application is easy to realize.

The invention relates to an ammonia-plaster mode desulphurization system comprising a desulphurization system and a replacement system, wherein the desulphurization system comprises an ammonia tank car, an ammonia unloading pump, an ammonia storage box, an ammonia distribution pump, an ammonia supply box, an ammonia supply pump, a desulphurization chamber, a boiler, a dust removing device, a draught fan, a flue, a chimney and a spray pump; the replacement system comprises a lime bin, a pulper, a lime slurry pump, a replacement chamber, a Roots blower, an ammonia gas recovery tower, an ammonia pump, a slurry pump, a centrifuger, a liquid collecting tank and industrial water. Flue gas does not need to be cooled before entering a reaction tower, the outlet temperature of an absorption tower is larger than 80 DEG C, the flue gas can be directly discharged into the flue without being heated in order to save energy resources and reduce operation cost, the desulphated water can be recycled after replacement treatment, the ammonia-plaster mode desulphurization system does not discharge waste water; the desulphurization and absorption tower completes absorption reaction in a parallel-flow mode and has short detention time, and compared with the traditional tower device used by other wet desulphurization technologies, the desulphurization of the desulphurization and absorption tower is gas and liquid counterflow reaction. The ammonia-plaster mode desulphurization system has small device size and small floor area and is beneficial to ageing unit improvement, and the additional draught fan does not need to be reformed.

The invention relates to a desulfurization-denitrification device for flue gas, and particularly relates to a desulfurization-denitrification integrated device using attapulgite as a denitrification catalyst support, and used for filter-bubble-absorbing type wet desulphurization. The device comprises a flue gas inlet, an ammonia-wind mixed spray gun, a uniform distribution flow divider, a catalyst module, a denitrification chamber, a flue gas outlet, a filter-bubble generator, a demister, a filter-bubble desulfurization chamber, a humidifying nozzle I, a humidifying nozzle II, a tower body, and the like. Flue gas enters in the tower body, and nitric oxides in the flue gas perform a catalytic reduction reaction under the action of a catalyst, so as to be reduced into nitrogen; and the denitrified flue gas enters in the filter-bubble desulfurization chamber from the denitrification chamber, sulfur dioxide in the flue gas is contacted with a desulfurizing agent in the filter bubbles generated by the filter-bubble generator and performs an acid-base neutralization reaction, so as to be desulfurized, and the flue gas obtained after water vapour in the flue gas is separated by the demister enters in a chimney via the flue gas, so as to be discharged, thus realizing desulfurization and denitrification on flue gas in the same device. The device can be widely used for desulfurization and denitrification for flue gas.

The invention discloses a zero-discharge treatment process for nitrogen and phosphorus of biomedicine wastewater and belongs to the field of industrial wastewater treatment in environmental protection. A treatment device for nitrogen and phosphorus of the biomedicine wastewater comprises a high-concentration wastewater treatment zone, a low-concentration wastewater treatment zone, an RO reverse osmosis purifying zone and a deionizer; high-concentration phosphorus-containing wastewater of biomedicine workshops is firstly added with a ferric, magnesium or aluminum salt for chemical phosphorous removal, effluent is uniformly mixed with low-concentration wastewater, then, the mixture is pumped into an A2/O process for biochemical treatment, effluent of a biochemical unit is subjected to ultraviolet disinfection, then, is subjected to rough filtration and refined filtration and then is subjected to multistage RO reverse osmosis treatment, the concentration of nitrogen and phosphorus in light water, which is finally discharged from a reverse osmosis unit, is extremely low, and thus the requirements of the wastewater on zero nitrogen-phosphorus discharge are met; concentrated water generated from RO reverse osmosis is subjected to anion-cation exchange and then returns to an RO system for treatment again; and acid/base wastewater generated during the regeneration of exchange resin is neutralized and then is subjected to outwards-shipped disposal, and subsequent washing water enters the RO system for treatment.

The invention discloses a machine and pump integrated submersible direct drive screw pump oil extraction device and method. A motor rotor is arranged outside, a motor stator is arranged inside, and the whole is arranged in a shell in a sleeved manner. A screw pump stator and the motor stator are relatively fixed, and rotation cannot happen. After starting, the motor rotor rotates and drives a flexible shaft, and then a screw pump rotor is driven to elevate well liquid. The machine and pump integrated submersible direct drive screw pump oil extraction device and method have the beneficial effects that the displacement is small, well type adaptability is high, the structure is compact, and one-time investment can be relatively reduced; and the shaft passing performance of a unit is improved,the oil well repairing avoiding period is prolonged, and cost reducing and effect increasing are achieved.

The invention discloses a catalyst for SCR denitration of cement kiln flue gas, a preparation method of the catalyst and a denitration system. The catalyst comprises 20-50 parts of silicon carbide, 5-15 parts of metal oxide, 3-8 parts of a vanadium-titanium composite oxide, 1-2.5 parts of an adhesive and 0.5-2 parts of a lubricant. The metal oxide is lanthanum oxide or cobalt oxide. The vanadium-titanium composite oxide is a titanium dioxide/vanadium pentoxide composite oxide. The denitration system comprises a preheater system, an intercepting net system, a ceramic filter pipe integrated system, an SCR denitration system and a waste heat power generation system, which are arranged in the flowing direction of flue gas. According to the invention, the catalyst carrier is prepared from silicon carbide and metal oxide, and the self-made composite oxide is used as the catalyst, so that the catalyst with good low-temperature activity, high sulfur resistance and good activity retention is prepared. The denitration system can greatly reduce one-time investment and operation cost of downstream desulfurization and dust removal equipment.

The invention relates to a short intelligent-control hoist type lifting oil extraction system with an ultra long stroke and a working method. The oil extraction system comprises a motor, a winding drum, a fixed pulley, a derrick, a slide and swing device, a control assembly, an oil extraction rope and a down-hole multi-stage plunger ultra long stroke oil well pump; the control assembly controls the motor to start, rotate forwards and backwards and halt for waiting according to set parameters such as the stroke, down-hole liquid pressure, halt waiting time and the like; the winding drum is driven to rotate forwards and backwards and halt, the oil extraction rope on the winding drum drives multi-stage plungers of the down-hole multi-stage plunger ultra long stroke oil well pump to reciprocate at the set stroke in an ultra long pump cylinder, a whole well operation mode that a plunger of a conventional hoist type bailing oil extraction device lifts a well liquid from the well bottom to the well mouth is changed, a non whole well operation mode is realized, the whole unit structure is compact, the size is small, material consumption is reduced, energy is saved, the cost is reduced remarkably, and one-time investment of an oil well can be reduced by almost 40%. The short intelligent-control hoist type lifting oil extraction system with the ultra long stroke is applicable to a deep well, a stripper well and a heavy oil well, and the oil well yield-increasing effect is improved remarkably.