47results about How to "Reduce purification energy consumption" patented technology

The invention discloses a method for producing anhydrous hydrogen fluoride and silicon tetrafluoride by utilizing fluosilicic acid. The method of the invention is specifically to firstly react fluosilicic acid solution with sodium sulfate at normal temperature to obtain sodium fluosilicate and dilute sulfuric acid. Filtration, dilute sulfuric acid is concentrated to make concentrated sulfuric acid, then mixed with filter cake sodium fluorosilicate ointment, added to the pre-reactor, reacted at 50-200 ° C to generate silicon tetrafluoride gas, and the silicon tetrafluoride gas passes through the degassing tower Silicon tetrafluoride products are obtained after treatment; the remaining materials in the pre-reactor are transported to the rotary furnace, and then hydrogen fluoride gas is released in the rotary furnace at 150-350 °C, and the hydrogen fluoride gas is purified to produce anhydrous hydrogen fluoride products. The remaining slag in the rotary kiln is discharged through the furnace tail. The fluosilicic acid solution used in the present invention is derived from the by-products of phosphate fertilizer or anhydrous hydrogen fluoride, the cost of raw materials is low, a new source of fluorine is opened up, and the obtained anhydrous hydrogen fluoride and silicon tetrafluoride products have wide application fields and outstanding economic benefits , high value-added products.

Disclosed are a separation and purification device and a separation and purification method for butanol and acetone. The separation and purification device comprises a fermentation device and a gas stripping and pervaporation coupling purification device. The separation and purification method implemented by the separation and purification device includes culturing acetone and butanol producing strains at first, and then fermenting the acetone and butanol producing strains to obtain butanol and acetone; performing online separation and purification for the acetone and butanol by gas stripping and pervaporation coupling purification; performing gas stripping for gas generated by the acetone and butanol producing strains during fermentation, filling the gas into a fermentation system to form bubbles, performing gas stripping for the butanol and the acetone in fermentation liquor of the acetone and butanol producing strains, and performing condensation gas stripping by a condensing plant to obtain butanol and acetone; purifying the butanol and the acetone by pervaporation membranes; and recycling permeate of the pervaporation membranes in a condensing mode or directly filling the permeate into a next-stage separation device. Raw material liquid used in the pervaporation process is lower-layer water-phase condensate obtained by gas stripping. The separation and purification device and the separation and purification method have the advantages that the butanol and acetone separation and purification efficiency is effectively improved, and novel technical support is provided for separating and purifying butanol, acetone and products of the butanol and the acetone which are produced by existing biological methods.

The invention provides a pipe type purifying method, the set purifying process of the solution to be purified is completed in a nonconservative pipe type purifying groove.The solution to be purified is a solution containing at least one granular solute; the pipe type purifying groove comprises a cavity full of liquid medium, at least one ultrasound wave source apparatus immersed in the liquid medium and at least one coiled apparatus full of the solution to be purified; the purifying process is that in the nonconservative flow process, the solution to be purified is irradiated in a insulation state by effective ultrasonic wave.

The invention discloses a process method for co-preparing liquid hydrocyanic acid and sodium cyanide. The process method is characterized by comprising the following step: performing an ammonia removal procedure and a deep cooling procedure on light oil cracking hydrocyanic acid mixed gas which is taken as a raw material, so as to obtain the liquid hydrocyanic acid, wherein the ammonia removal procedure comprises the specific steps of absorbing the hydrocyanic acid mixed gas by sulphuric acid aqueous solution; the deep cooling procedure is cooling the hydrocyanic acid mixed gas to minus 10 to minus 20 DEG C, after the hydrocyanic acid mixed gas is cooled, a part of the hydrocyanic acid gas becomes a liquid to obtain the liquid hydrocyanic acid, and the other part of the hydrocyanic acid gas is a tail gas containing hydrocyanic acid; the deeply-cooled tail gas containing hydrocyanic acid is absorbed by sodium hydroxide aqueous solution to prepare a sodium cyanide aqueous solution. According to the process method disclosed by the invention, by using a method of combining direct deep cooling under a micro-negative pressure with tail gas absorption, a purification efficiency for hydrocyanic acid and a utilization efficiency for hydrocyanic acid can be remarkably increased, meanwhile, energy consumption during a purification process for hydrocyanic acid is greatly reduced and can be reduced by 90% to the greatest extent; moreover, the utilization rate of hydrocyanic acid is greater than 99.9%.

The invention discloses a multi-field joint lubricating oil dehydration and purification device. Lubricating oil is sequentially connected with a primary swirler, a strainer, a secondary swirler and a vacuum tank through pipelines, wherein a pulse electrode is arranged in the secondary swirler, a heater is arranged on a pipeline between the secondary swirler and the vacuum tank, the upper part of the vacuum tank is connected with a vacuum pump through a pipeline, a condenser is arranged on the pipeline for connecting the vacuum tank with the vacuum pump, the bottom of the vacuum tank is connected with an oil drain valve and a nitrogen generator and provided with a backflow pipe, and an oil pump is arranged on the backflow pipe and connected with the oil drain valve through an oil outlet pipe. The multi-field joint lubricating oil dehydration and purification device can be used for thoroughly dehydrating the lubricating oil, realizing deep purification and dehydration, and greatly shortening demulsification time so as to quickly finish the lubricating oil purification treatment and reduce the energy consumption of the oil purification. The multi-field joint lubricating oil dehydration and purification device can be used for removing trace moisture in the lubricating oil, and also can be applied to the dehydration and purification treatment of the lubricating oil with high water content, thus being wide in applicable range.

The invention provides an air purifying robot with a fire fighting function. The air purifying robot comprises an air purifying module, a fire fighting module and a robot main body, the fire fightingmodule comprises a base, a mechanical arm, a mechanical hand, a fire extinguisher, a fire extinguishing control valve and a hydraulic valve, the base is installed on the robot main body by rotating by360 degrees, the mechanical arm is installed on the base and rotates by 360 degrees along with the base, the mechanical arm is provided with the hydraulic valve which controls joints of the mechanical arm to rotate and adjusts the mechanical arm to stretch and retract, the fire extinguisher is arranged on one side of the base, a safety pin of the fire extinguisher is provided with the mechanicalhand, the mechanical hand is connected with the mechanical arm through the hydraulic valve, the tail end, away from the base, of the mechanical arm is provided with a fire extinguishing nozzle, and aspraying port of the fire extinguisher is connected with the fire extinguishing nozzle through the fire extinguishing control valve. The problems of the low comprehensive utilization rate, high energyconsumption and high air purifying cost of an existing purifier are solved, and the problems that a fire source cannot be found in time, and personnel casualties and huge loss in property are causedare solved.

The invention provides a sintered flue gas full-process purification system and a method of the sintered flue gas full-process purification system. An inlet of the sintered flue gas full-process purification system is provided with a dedusting device capable of performing dedusting processing on sintered flue gas, an inlet of the dedusting device communicates with a sintering machine air bellow capable of leading out the full-process flue gas of a sinter, and an outlet of the dedusting device communicates with a temperature raising device capable of performing temperature-raising processing onthe sintered flue gas. An outlet of the temperature raising device communicates with a denitrification device capable of performing denitrification processing on the sintered flue gas, an outlet of the denitrification device communicates with a waste heat recycling device capable of lowering the temperature of the sintered flue gas through heat exchange, and an outlet of the waste heat recyclingdevice communicates with a desulfuration device capable of performing desulfuration processing on the sintered flue gas. By means of the sintered flue gas full-process purification system and the method of the sintered flue gas full-process purification system, full-process purification of the sintered flue gas is achieved, purification energy consumption is lowered, the nitrogen oxide dischargingconcentration of the flue gas is lower than 100 mg / <Nm>3, and the emission index requirements of the nitrogen oxides are met.

The invention relates to the technical field of microcrystalline graphite purification, and discloses a process for preparing high-purity microcrystalline graphite with low energy consumption and in alarge scale, and the high-purity microcrystalline graphite. According to the process, microcrystalline graphite raw ore is firstly crushed and ground, and flotation including one time of roughing, four times of cleaning and one time of scavenging is performed in match to increase the purity of the raw ore to the utmost through a physical method; an improved acid leaching purification method is adopted, the alkali leaching efficiency is increased, energy consumption is reduced, and the graphite recovery yield is increased; and finally a high-temperature purification method adopting a step-by-step heating manner is utilized to further reduce energy consumption for graphite purification, and the high-purity microcrystalline graphite the fixed carbon content of which is 99.993% or above can be finally obtained. The process overcomes a problem that microcrystalline graphite in the prior art is not high in purity, high in energy consumption and high in cost. Through improvements on the prior art, the process achieves an objective of reducing energy consumption and the cost, and achieves industrial production.

The invention provides fire grate and pyrolysis combined waste incineration equipment. With a pyrolyzing furnace as a major, a grate furnace is installed at the feeding end of the pyrolyzing furnace obliquely; the feeding end of the grate furnace is connected with a waste guide bin, an inlet of the waste guide bin is upward, and a gantry crane claw is arranged above the inlet of the waste guide bin; a slag outlet of the pyrolyzing furnace is connected with an automatic slag discharging machine; a storage tank is arranged below the automatic slag discharging machine; a secondary combustor is installed on the upper left portion of the grate furnace; and the upper portion of the pyrolyzing furnace is provided with a circulating pipeline, high-temperature flue gas enters a buring section of the pyrolyzing furnace through the heat circulating pipeline. By means of the equipment, combustibles are greatly reduced, and toxic and harmful ingredients in flue gas are thoroughly burnt. Purification energy consumption of flue gas of the rear end is reduced, the whole equipment is in the same space but different sections, heat is utilized to the greatest extent, and resource utilization is achieved.

The invention provides a technological method for jointly preparing liquid hydrogen cyanide and bisisobutyronitrile hydrazine. The technological method comprises the steps that a light oil cracking hydrogen cyanide gas mixture is used as a raw material and undergoes an ammonia removal process and a cryogenic process to obtain liquid hydrogen cyanide, wherein in the ammonia removal process, the hydrogen cyanide gas mixture is absorbed with a sulfuric acid aqueous solution; in the cryogenic process, the hydrogen cyanide gas mixture is cooled to minus 10-minus 20 DEG C, after the hydrogen cyanide gas mixture is cooled, a part of the hydrogen cyanide gas becomes liquid to obtain liquid hydrogen cyanide, and the other part of the hydrogen cyanide gas is the tail gas containing hydrogen cyanide; the tail gas containing hydrogen cyanide, which undergoes cryogenic treatment, is absorbed with a ketazine aqueous solution to obtain an aqueous solution containing bisisobutyronitrile hydrazine, and the aqueous solution containing bisisobutyronitrile hydrazine undergoes cooling, crystallization and centrifugal filtration to obtain a bisisobutyronitrile hydrazine crystalline solid. By adopting the technological method, the purification efficiency and the utilization efficiency of hydrogen cyanide can be obviously improved, meanwhile, the energy consumption in the hydrogen cyanide purification process is greatly reduced and can be reduced by 90% at most, and the utilization rate of hydrogen cyanide is more than 99.9%.

The invention provides a pipe type purifying method, the set purifying process of the solution to be purified is completed in a nonconservative pipe type purifying groove.The solution to be purified is a solution containing at least one granular solute; the pipe type purifying groove comprises a cavity full of liquid medium, at least one ultrasound wave source apparatus immersed in the liquid medium and at least one coiled apparatus full of the solution to be purified; the purifying process is that in the nonconservative flow process, the solution to be purified is irradiated in a insulation state by effective ultrasonic wave.

The invention discloses a device for preparing electronic grade dichlorosilane; the device comprises a reactor for reaction of an aromatic aldehyde or aromatic aldehyde derivative and raw material dichlorosilane; a purification tower for removal of part of heavy components and then removal of light components and the remaining heavy components in reaction products in the reactor to obtain electronic grade dichlorosilane; and an adsorption and purification unit for further removal of impurities of the electronic grade dichlorosilane; the technology greatly shortens the process, and reduces equipment investment and running energy consumption, and the product quality can achieve the electronic grade.

The invention relates to a method for purifying polycrystalline silicon, particularly relates to a method for purifying polycrystalline silicon by coordination of volatile slag formation and gas blowing, and belongs to the technical field of metallurgy. A technical problem solved by the invention is to provide the method for purifying polycrystalline silicon by coordination of volatile slag formation and gas blowing. The method comprises the following steps: step a, mixing raw material silicon with a slag forming agent of a volatile slag system, heating to melt in an inert gas atmosphere to obtain a melt; and step b, blowing an ammonia gas mixed gas into the melt, performing heat preservation and reacting for 60-120 min, then cooling and performing silicon-slag separation to obtain purified polycrystalline silicon. The method provided by the invention purifies the polycrystalline silicon by coordination of volatile slag formation and gas blowing, realizes coordination of chlorination,oxidation and nitridation in the process of purifying the polycrystalline silicon, and can greatly reduce boron impurity in silicon within a short treatment time so as to greatly reduce energy consumption during purification.

The invention relates to the chemical industry field, particularly to a diffusion pump oil synthesis method, which specifically comprises: (1) carrying out a hydrolysis reaction on methyl triethoxysilane to obtain 1,3-dimethyl-1,1,3,3-tetraethoxydisiloxane (short for compound B); (2) under a strong alkali condition, carrying out balanced telomerization on the compound B and a dimethyl ring body or methylphenyl ring body to obtain a compound D; (3) carrying out a sodium condensation reaction on the compound D, chlorobenzene and sodium to obtain the diffusion pump oil. According to the present invention, the reaction order is re-combined, and the method has advantages of low energy consumption and environmentally friendly process compared to the method in the prior art.