43results about How to "Resolve enrichment" patented technology

The invention relates to baffle reaction-rectification equipment and a process for comprehensive utilization of dichlorosilane and silicon tetrachloride. The baffle reaction-rectification equipment comprises a main baffle reaction-rectification tower, an overhead condenser, a bottom reboiler and a bottom material circulating pump. The main reaction-rectification tower is divided into four parts by means of a vertical baffle plate arranged therein: a public rectifying section, a public stripping section, a reaction and pre-separation section and an extraction section, wherein, the reaction andpre-separation section is defined into a B section, a C section, an E section and an F section; the extraction section is defined into a D section and a G section; reaction catalysts are filled in the C section and the E section for reaction and rectification; and other parts are provided with efficient structured packing or a tower plate for rectification and separation. In the invention, trichlorosilane with high application value is prepared by adopting the dichlorosilane and the silicon tetrachloride with lower value, thus improving the application rate of raw materials, and solving the enrichment problem of the dichlorosilane and the silicon tetrachloride. By utilizing the baffle reaction-rectification process, a plurality of towers used in reaction and rectification as well as separation and purification are integrated in one baffle reaction-rectification tower, thus saving equipment investment of the tower, and lowering energy consumption.

The present invention relates to a high-purity cobalt preparation method, which comprises: cobalt solution extraction separation and purification, wherein a P507 organic extractant is prepared from P507 by using a saponification way, a cobalt chloride solution is added, extraction separation is performed by using a stirring extraction method, acid liquid washing and acid liquid back extraction are performed, the solution obtained after the back extraction is subjected to deep purification treatment by using a macroporous adsorption resin, and the obtained solution is concentrated to obtain the high-purity cobalt solution; electrodepositing, wherein the high-purity cobalt solution enters a self-heating electrolysis bath through a flow baffle from the bottom portion of the electrolysis bath from bottom to top so as to carry out single circulation electrodepositing, the concentration, the amount and the pH value of the solution in the electrolysis bath maintain the consistent state, and electrodepositing is performed to obtain high-purity electrodepositing cobalt; and vacuum melting, wherein the high-purity electrodepositing cobalt is subjected to vacuum melting so as to prepare the high-purity cobalt. According to the present invention, the product purity is more than 5N, the impurity enrichment problem caused by the electrolyte concentration difference is successfully solved, the cost is reduced, and the cross-contamination of the electrolyte is prevented.

The invention provides a method for promoting desulfuration of an electron beam refined high-temperature alloy. The method comprises the following steps: S1, pre-treatment of a high-temperature alloy raw material; and S2, electron beam refining and purification of the nickel-based high-temperature alloy to obtain a high purity FGH4096 high-temperature alloy cast ingot. The high-temperature alloy is desulfurated by means of electron beam refining, and a degassing reaction of S impurity element is intensified by means of characteristics of high electron beam refining vacuum degree and high temperature in a beam spot area. According to a characteristic that a water cooling copper crucible is free of pollution in the refining process, problems of erosion of a refractory matter of a conventional process crucible such as VIM and the like are solved. The problem of ultra-purification of a high-temperature alloy base metal is solved by means of density difference of occluded foreign substances and melt and a special inducible solidification mechanism of the electron beams in promoting migration and enrichment of the occluded foreign substances.

The invention provides whole-growing-season phosphorus and potassium compound fertilizer for tobaccos. The whole-growing-season phosphorus and potassium compound fertilizer is prepared from an organiccomponent prepared from feather cockscomb biomass carbon, composted feather cockscomb-rapeseed cake fertilizer, tobacco stem biomass carbon, phosphorus-dissolving bacteria, potassium-dissolving bacteria and attapulgite, and three inorganic components according to the mass ratio of 1 to (1 to 3), wherein the mass ratio of the inorganic component 1 to the inorganic component 2 to the inorganic component 3 is 1 to (1 to 2) to (1 to 2); the inorganic component 1 is prepared from silicon-phosphorus fertilizer, potassium sulfate, phosphorus humate and the attapulgite; the inorganic component 2 is prepared from ammonium polyphosphate, ammonium nitrate, medical stones and the attapulgite; the inorganic component 3 is prepared from potassium humate, phosphorus humate and the attapulgite. Accordingto the whole-growing-season phosphorus and potassium compound fertilizer for the tobaccos, the problems that the utilization rate of phosphorus fertilizer and potassium fertilizer for baking the tobaccos is low, phosphorus is enriched in soil and the potassium content of tobacco leaves is low are solved.

The invention discloses a device for preparing trichlorosilane. The device comprises a rectifying tower, a silicon tetrachloride discharge pipe arranged at the bottom of the rectifying tower and a silicon tetrachloride discharge pipe arranged on the rectifying tower, a fixed bed reactor connected with the silicon tetrachloride discharge pipe, a mixing pipe provided with a static mixer, a trichlorosilane discharge pipe arranged in the middle position of the rectifying tower and an impurity outflow pipe arranged at the top position of the rectifying tower, wherein the fixed bed reactor is also connected to a dichlorosilane feed pipe, and the silicon tetrachloride discharge pipe and dichlorosilane feed pipe are subjected to cooperation by the mixing pipe; the discharge outlet of the fixed bed reactor is connected to the upper part of the rectifying tower by a synthesis gas pipe, and the impurity outflow pipe is connected to the reflux tank of the rectifying tower. By virtue of two devices, dichlorosilane and silicon tetrachloride as byproducts in the improved Siemens production process are converted into trichlorosilane, the utilization of raw materials is improved and the problem of enrichment of dichlorosilane and silicon tetrachloride is solved.

The application relates to an ionization system, a mass spectrometry analysis system and a sample introduction method thereof. The ionization system includes a laser ablation device, a microwave plasma torch and a connection tube. The laser ablation device is used to carry out laser desorption on a sample to enable the sample to produce a fine-grained aerosol. The microwave plasma torch includes arectangular tube, a tuning piece, a microwave component and an igniter. The rectangular tube is used to introduce the fine-grained aerosol and carrier gas. The microwave component is used to transmitmicrowave energy. The igniter is used to generate a plasma flame torch at an opening end of the microwave plasma torch to enable the fine-grained aerosol and charged particles to be converted into ions. One end of the connection tube is in communication with the laser ablation device, and the other end is in communication with the rectangular tube. The connection tube is used to introduce the fine-grained aerosol output by the laser ablation device and the carrier gas into the rectangular tube. The ionization system, the mass spectrometry analysis system and the sample introduction method thereof provided by the application can solve the problem of complicated sample introduction existing in traditional ionization mass spectrometry analysis technology.

The invention discloses a process for preparing trichlorosilane by utilizing reverse disproportionation reaction. The process is characterized by comprising the following steps: step (1): conveying silicon tetrachloride into a rectifying tower from the bottom of the rectifying tower, pumping out and sufficiently mixing with dichlorosilane in a static mixer after purifying, wherein a mass ratio of the dichlorosilane to the silicon tetrachloride is 1to 10; a step (2): feeding the silicon tetrachloride and the dichlorosilane which are sufficiently mixed in the step (1) into a fixed-bed reactor for reacting; and step (3): conveying a synthesis gas reacting in the fixed-bed reactor in the step (2) into the rectifying tower, wherein trichlorosilane is discharged from the middle position of the rectifying tower. According to the process disclosed by the invention, the raw materials, namely dichlorosilane and silicon tetrachloride with lower value are converted into trichlorosilane with a very high utilization value, so that material utilization rate is effectively increased; meanwhile, a problem that the dichlorosilane and the silicon tetrachloride are enriched is solved.

The invention discloses a production device and a preparation method of organic sodium alcoholate. The production device comprises a kettle reverse rectification device. The method comprises the following steps: adding metallic sodium into the kettle reverse rectification device, then carrying out nitrogen replacement, starting a vacuum device, pumping a reactor to-0.1 MPa, adding organic alcoholinto the reactor, and carrying out a reaction at a certain temperature under a negative pressure condition to obtain an organic sodium alkoxide solution with a certain solid content. According to thepreparation method of organic sodium alcoholate, the boiling point of the organic alcohol is reduced through vacuum rectification, and the distilled organic alcohol flows back to the reaction system again so that direct heat exchange between the material and the backflow material can be promoted, the temperature of the reaction system is reduced, and the problems that the boiling point of the organic alcohol is too high, metal sodium is heated and melted into a spherical shape, the reaction intensity is increased, and the reaction is out of control are well solved.

The invention relates to a novel process for removing light components in the stock solution of furfural and a special apparatus matching with the same. The novel process comprises the following steps: heating a column bottom to allow the temperature of the column bottom to rise to 100 to 105 DEG C; delivering the stock solution of furfural into a special light component removing column through a feed inlet, maintaining the temperature of the column bottom to be 100 to 105 DEG C, the pressure of the column bottom to be 0.1 to 0.2 kg/cm<2>, tower top temperature to be 65 to 70 DEG C and a reflux ratio to be 1: 20, and cooling a light component removing stock solution to a temperature of 70 to 80 DEG C through two steps. A tower section II at the upper part of the special light component removing column is smaller than a tower section I at the lower part of the special light component removing column; the feed inlet is connected with a stock solution storage tank through a pipeline; a fraction outlet is connected with a condenser through a pipeline; the condenser is connected with the upper end of a liquid separator through a pipeline; the liquid separator is respectively connected with a reflux opening and a storage tank through pipelines; a discharge outlet is sequentially connected with a cooler, a condenser II and a buffer tank through a pipeline. According to the invention, more than 95% of light components in the stock solution of furfural are removed, and total yield of furfural is increased by about 5%.

The invention discloses a multi-pass gas-liquid phase absorption type trace element collection system and a collection method. In the prior art, the liquid-gas contact reaction time in an impact bottle is short, trace elements are easy to escape, negative deviation is brought to a test result, and the accuracy of the test result is influenced. The system comprises a sampling head (1), one end of a pitot tube (2) is fixed on the sampling head, a differential pressure gauge (4) is mounted at the other end of the pitot tube, the sampling head is connected with an accelerating tube (5) through a connecting pipeline, a heat tracing layer (3) wraps outside the connecting pipeline, the accelerating tube adheres to the wall and extends into a fly ash separator (6) along a tangent line, a separation cylinder (8) is arranged on the fly ash separator, a filter membrane (7) is arranged at the bottom of the separation cylinder, the upper part of the bottom of the separation cylinder is connected with an impact pipe (9) through a connecting pipe, and the impact pipe is arranged in a mixing reactor (17). The invention is used for the multi-pass gas-liquid phase absorption type trace element collection system.

The invention discloses an up-to-standard discharging system of slag-washing water from a thermal power plant based on water balance. The up-to-standard discharging system is provided with a slag washing pool, wherein the output of the slag-washing pool passes through a slag washing pump, a slag pool, a slag discharging pump, an ash yard, a clarifying pool, a softening device, a return-water coagulation and precipitation pool, a clean-water pool and a water return pump in sequence and then returns to the slag-washing pool; another path of the water return pump is directly connected with the water-producing end of a primary reverse-osmosis device, and the other path of the water return pump is connected with the input end of the primary reverse-osmosis device by a return-water filtering device and an ultrafiltration device; the concentrated-water end of the primary reverse-osmosis device is connected with a secondary reverse-osmosis device, the water-producing end of the secondary reverse-osmosis device is connected with the water-producing end of the primary reverse-osmosis device, and the concentrated-water end of the secondary reverse-osmosis device is connected with an evaporation and concentration device which exchanges heat with a steam system.

The invention provides a technical scheme of a furnace end beam structure for a steel rolling heating furnace. The technical scheme is as follows: the furnace end beam structure comprises a furnace end beam steel structure, wherein the furnace end beam steel structure is connected with a furnace top crossbeam by virtue of a furnace end beam hanging structure; a circulating cooling pipe is arranged in the furnace end beam steel structure. The furnace end beam structure is characterized in that the circulating cooling pipe is also connected with a sewage discharge device, a flow monitoring device and a temperature monitoring device; the flow monitoring device and the temperature monitoring device are also connected with a control device; a multi-section heat preservation structure matched with the outer surface of the furnace end beam steel structure is arranged outside the furnace end beam steel structure; the heat preservation structure arranged on the top of the furnace end beam steel structure is connected with a hanging bracket. According to the technical scheme, a series of problems of down-warping of a furnace end beam, failure of refractory materials of the furnace end beam, rich impurities in the furnace end beam and the like in the prior art are solved, so that the overhauling difficulty and construction period are greatly reduced; meanwhile, cooling water in the furnace end beam steel structure can be monitored on line, thus ensuring the operation security of the furnace end beam.

The invention discloses a method for removing chlorine radicals and sulfate radicals in a zinc hypoxide raw material, which comprises the following steps: A, mixing and reacting raffinate containing chlorine radicals, sulfate radicals, ammonium radicals and a small amount of metal ions with a calcium chloride solution to obtain mixed turbid liquid, and carrying out solid-liquid separation on the mixed turbid liquid to obtain calcium sulfate solid and calcium sulfate supernate; B, drying the calcium sulfate solid to obtain calcium sulfate dihydrate; C, adding lime into the calcium sulfate supernatant through a lime feeding system, and carrying out pre-deamination to obtain a deamination liquid; and D, pumping the deamination liquid into a deamination tower, carrying out steam stripping deamination on the deamination liquid, and collecting obtained ammonia gas through an ammonia gas absorption tower to obtain regenerated ammonia water. The method for removing the chlorine radicals and the sulfate radicals in the zinc hypoxide raw material adopts the structure, is simple in process, short in flow and high in operability, can solve the problem of enrichment of the chlorine radicals and the sulfate radicals in the zinc hypoxide raw material comprehensively recovered by a traditional process, and reduces the production cost.