32results about How to "Fast desorption rate" patented technology

The invention discloses a catalytic module capable of removing formaldehyde at room temperature and a preparation method thereof. The catalytic module comprises a skeleton carrier, coatings and catalyst layers, the skeleton carrier is a foam ceramic structure with three-dimensional pore channels, and the foam ceramic structure is internally provided with multiple pore channels which are interwoven into a net-shaped structure and arranged in any one of the X direction, the Y direction and the Z direction; the coatings are evenly coated on the surfaces of the pore channels in the foam ceramic structure and the other surface of the foam ceramic structure, and the catalyst layers are highly dispersed on the coatings. By means of the catalytic module capable of removing the formaldehyde at the room temperature and the preparation method thereof, at the room temperature and environment humidity, low-concentration formaldehyde can be oxidized into H2O and CO2, excellent low-temperature activity and removing efficiency are achieved, and the formaldehyde removing efficiency can be kept above 98 percent at the airspeed SV equal to 50,000 h<-1>. The preparation process is simple, the precious metal load is low, and accessory equipment such as light sources and heating are not needed. The catalytic module is suitable for air purification of closed and semi-closed spaces such as living rooms, office buildings, schools, dormitories, shopping malls, furniture markets and automobiles.

The invention discloses an organic waste gas adsorbing recovery device and a process. The device comprises at least two macromolecule resin adsorbing towers, a heat pump, a vacuum pump, a condenser, a liquid storing tank and the like, wherein the macromolecule resin adsorbing towers are internally provided with waste gas inlet regions, purifying regions for adsorbing and purifying gas and a purifying gas discharging region; the purifying regions are provided with adsorbing layers which are horizontally paved, the adsorbing layers are composed of multi-hole supporting plates fixed on the adsorbing towers, heat exchanging coils paved above the multi-hole supporting plates and macromolecule resin layers which are fully paved on the cross sections of the adsorbing towers above the heat exchanging coils successively in a overlaying manner, and the heat exchanging coils are provided with inlets and outlets communicated with the heat pump arranged outside the adsorbing towers. The organic waste gas adsorbing recovery device and the process provided by the invention have the advantages that a non-flammable macromolecule resin is adopted as an adsorbing material, the removing rate of middle-high concentration organic waste gas is more than 98%, the organic waste gas recovery rate is more than 95%, the resin is fully regenerated, and the organic waste gas can reach the discharge standard.

The invention discloses a desorption and regeneration method for an organic matter adsorbent. The method is characterized in that an organic matter adsorbent desorption and regeneration device of a microwave generator is arranged in a desorption tower; the to-be-desorbed adsorbent with organic matters is put in the desorption tower; steam is aerated from the top of the desorption tower; the microwave generator is started, wherein the microwave power is 500-10000W; desorption is carried out for 2-30 minutes; the desorbed organic matters and steam flow out from a steam outlet at the bottom of the desorption tower and enter a condenser for condensation; then the steam is cut off, nitrogen is aerated from the top of the desorption tower, and the nitrogen flows out from the bottom, wherein the microwave power is 200-2000W; drying treatment is carried out for 2-20 minutes; the microwave generator is turned off, and the nitrogen is cut off; the desorbed adsorbent is obtained. According to the method, the desorption rate is improved by a large margin by combining steam and the microwave technology, and less desorption residue is left.

Disclosed is a method for separating normal alkane from C5 to C6 alkane isomerized products. Isopentane is removed from raw materials, and the obtained materials are added into an adsorption separation post to adsorb normal alkane under 2.0-4.0 MPa, 100-150íµ and liquid phase condition, after saturation by adsorption, the adsorption separation post is flushed with flushing agent of isopentene, then desorbed by desorbing agent of C7 to C9 normal alkane. The method can separate normal alkane in light hydrocarbon isomerized products, and the used desorbing agent is less, the desorbing time is short.

The material for preparing titanium silicate adsorbent has molar ratio between Si and Ti of 8-20,and the proportion among alkoxide, water and polyethylene glycol of 1 to 5-15 to 0.002-0.005. The preparation includes the steps of sol preparation and titanium silicate preparation. The sol preparation includes partial hydrolysis of ethanol solution of silanolate, adding ethanol solution of titanic alkoxide while heating for complete hydrolysis; and adding polyethylene glycol for condensation to form sol. In the titanium silicate preparation, the sol is prepared into hydrogel through oil-free formation process and the hydrogel is then prepared into nano spherical titanium silicate via washing, drying and sieving. The titanium silicate product has high adsorption performance and is used in producing core of dehumidifying wheel.

The invention discloses a thermo-sensitive solid amine fiber material as well as a preparation method and application thereof. The thermo-sensitive solid amine fiber material is prepared by introducing amine and thermo-sensitive functional groups to the surface of base fiber through synthesis. By adopting the fiber material, the water absorption rate of the material can be changed and controlled by adjusting the change of ambient temperature, and the fiber material can be also controlled to have different water absorption rates by regulating and controlling different mole ratios of thermo-sensitive groups to amino. The fiber material can be applied to the field of intelligent special fiber products or the field of CO2 adsorption, the highest adsorption capacity of the fiber material to CO2 at 35 DEG C and 40 DEG C can be up to 3.8mmol/g, and moreover, CO2 can be completely desorbed at 70 DEG C within 30 minutes after being adsorbed by using the fiber material, so that the thermo-sensitive solid amine fiber material has the advantages of low desorption energy consumption and rapid desorption velocity.

The invention discloses a preparation technology of a bamboo columnar carbon with ultrahigh performance. The preparation technology comprises steps as follows: S1), selection of a raw material: the raw material is a bamboo carbonized material; S2), grinding and sieving: the raw material is sieved with a 325-mesh sieve, and the bamboo carbonized material of 325 meshes or fewer than 325 meshes is taken as one raw material; S3), powder grinding and material mixing: a small amount of petroleum asphalt is added to the bamboo carbonized material powder of 325 meshes or fewer than 325 meshes for powder grinding and mixing treatment, and a first mixture is obtained; S4), stirring: water is added to the first mixture for stirring; S5), pre-extrusion; S6), pressing and extrusion molding; S7), segmented drying; S8), carbonizing; S9), gradient type activation: the carbonized material is put in an activating furnace to be activated for 1-2 h at the temperature of 750-850 DEG C and then is activated for 1-3 h after the temperature is increased to 850-950 DEG C, and the bamboo columnar activated carbon is obtained. The bamboo columnar activated carbon prepared with the technology has the characteristics that strength, adsorbability and adsorption capacity are high, the ash content is low, adsorption speed and desorption speed are high, obvious cracks on the outer surface are avoided, the yield of follow-up carbonized and activated products is high and the like.

This invention relates to catalyze multiple section stripper method, which comprises the following steps: transporting the stripper catalyze agent flowing freely form top to down to the top stripper section bottom in the stripper with more than two sections of stripper to remove the mixed gas or liquid materials; the catalyze flowing to the top and then to the downside stripper section; repeating the above steps in the down stripper section to the down the stripper section; in the down stripper section, the catalyze flowing to the bottom of the stripper section from top to down for exhausting the catalyze gas outside stripper; extracting the above materials together with medium gas channel outside the stripper.

The invention relates to a preparation method of a novel ternary compound organic amine medicament capable of absorbing CO2 with little water. The preparation method and the proportion are as follows:according to the molar ratio of 20 to (1-20) to 6, the novel ternary compound organic amine medicament is prepared by mixing DETA (diethylenetriamine), TETA (triethylenetetramine) or TEPA (tetraethylenepentamine) and MDEA (N-methyl diethanolamine) or PZ (piperazine) in a solution with a total amine concentration of 0.8 mol/L, according to the preparation conditions, the temperature is 293 K, thepressure is 101.325 Kpa, and the mixing condition is that every two preparation solutions are uniformly mixed at normal temperature and normal pressure. The preparation method of the novel ternary compound organic amine medicament capable of absorbing CO2 with the little water has the advantages that the novel ternary compound organic amine medicament is a flue gas CO2 absorbent with large absorption capacity, good stability of the solution, low energy consumption, high flue gas purification degree, large absorption load, low regeneration energy consumption of the absorbent, fast desorption rate, large desorption load, low oxidation degradation and thermal degradation degree of the solution and less corrosion to equipment.

A preparation technical of m-cresol is that: M-cresol is diazotizated, and hydrolyzed while at the same time steam is distilled to prepare a distilled m-cresol hydrolysis liquid. The distilled hydrolysis liquid passes through a N3520 type macroporous resin, and is eluded by organic solvent; the m-cresol product is obtained after rectifying. The invention adopts steam to distil m-cresol generated by hydrolyzation in time, which produces little byproduct tarry matter and increases the yield rate of m-cresol; preparation of product and treatment of waste water are carried out at the same time, which reduces the waste water treatment procedure and simplify the progress of preparation technology; because the invention adopts N3520 type macroporous resin to dispose the distilled m-cresol hydrolysis liquid, the m-cresol is easily desorbed with a fast desorption rate and a short reaction cycle, thus being beneficial to the recycle of m-cresol. The preparation technology of m-cresol of the invention has a yield rate over 85 percent and purity over 99.5 percent.

The invention discloses an intelligent constant temperature and ultrasonic wave promoting desorption integrated coal sample tank and a using method thereof. The coal sample tank comprises a tank bodyand a tank cover, the tank cover is provided with an exhaust pipe, and the exhaust pipe is provided with a gas flow meter and an air exhaust valve. A temperature regulating inner container is arrangedon the inner wall of the tank body, and a thermal insulating layer is further arranged between the temperature regulating inner container and the inner wall of the tank body. A temperature sensor isinstalled in the tank body, and an intelligent temperature control device is installed on the side wall of the tank body. The temperature regulating inner container and the temperature sensor are bothelectrically connected with the intelligent temperature control device. According to the intelligent constant temperature and ultrasonic wave promoting desorption integrated coal sample tank and theusing method thereof, intelligent dynamic regulation and ultrasonic wave desorption promotion of the temperature inside the tank body can be performed for arbitrary downhole temperature, and adsorption gas in a coal sample is evenly oscillated, so that the gas desorption rate in the coal sample is accelerated, the desorption is more complete, and the determination of gas content in underground coal samples is more accurate.

The invention discloses a preparation method of an iron-based biochar wave-absorbing material and a method for repairing mercury-polluted soil through the synergy of the iron-based biochar wave-absorbing material and microwaves. The preparation method comprises the following steps of: grinding biochar, soaking the biochar in 1-3mol/L phosphoric acid for a period of time; mixing the biochar with an iron salt solution in a mass ratio of 1: (3-6); and carrying out a hydrothermal reaction at 180-200 DEG C to obtain the iron-based biochar. The iron-based biochar is added into mercury-polluted soil according to a ratio of (5-10)%, the iron-based biochar is uniformly mixed with the mercury-polluted soil, and a reaction is performed in a microwave reactor at 150-220 DEG C for 60-120 minutes to remove mercury. The removal rate of the iron-based biochar wave-absorbing material for mercury in the mercury-contaminated soil reaches 90% or above; the iron-based biochar wave-absorbing material has the advantages of good remediation effect, short time, high efficiency and good application prospect.

The invention discloses a zeolite molecular sieve regeneration device and a regeneration method, and belongs to the technical field of zeolite molecular sieves. The regeneration device comprises a microwave digestion tank, a microwave generator and a temperature controller; the microwave generator is arranged at an opening of the microwave digestion tank; the temperature controller is used for controlling the heating temperature of a zeolite molecular sieve; and a weighing device is used to weigh the heated zeolite molecular sieve. The regeneration method comprises the following steps: placinga saturated zeolite molecular sieve which adsorbs volatile organic compounds (VOCs) into the microwave digestion tank, starting the temperature controller and setting a temperature, starting the microwave generator, heating the zeolite molecular sieve, recording the time, turning off the microwave generator every one minute, taking out the zeolite molecular sieve for weighing, and repeating the heating and weighing processes until the weight of the zeolite molecular sieve does not change any more, so that regeneration is completed. According to the invention, microwave is utilized to rapidlyheat the zeolite molecular sieve, and the regeneration temperature is lower than the regeneration temperature of a conventional regeneration method, so that the regeneration method has the advantagesof high desorption rate, low energy consumption and the like. In addition, the desorbed substances after microwave desorption are directly condensed into a liquid state and thus are convenient to recycle, so that secondary pollution is avoided.

The invention discloses a drying agent with a heavy metal removal function and a preparation method thereof. The preparation method comprises the following steps: 1, preparing bentonite filtered powder; 2, uniformly mixing the bentonite filtered powder, silicon dioxide nano powder and plant starch, adding water, and preparing a suspension; 3, adding an organic modifier and an auxiliary modifier into the suspension, adjusting the pH with a sodium hydroxide solution and then heating to prepare modifiedbentonite; 4, soaking the modified bentonite in a hydrochloric acid solution, washing the modified bentonite to be neutral with deionized water, granulating, and drying to obtain the spherical drying agent with the particle size of 1-3 mm. The prepared drying agent has a good adsorption effect on heavy metal ions, especially for heavy metal ions such as copper, chromium, nickel, lead, iron and zinc, the lead ion adsorption rate can reach 75% or above, and the chromium ion adsorption rate can reach 80% or above.

The invention discloses a polypropylene foaming material and a preparation method thereof. The preparation method comprises the following steps: foaming polypropylene and small molecular alcohol undera CO2 condition, wherein the micromolecular alcohol is alcohol with a carbon chain of C1-4, and when the micromolecular alcohol is alcohol with a carbon chain of C1-4, the foaming temperature is higher than 125 DEG C but not higher than 140 DEG C, when the small molecular alcohol is alcohol with a carbon chain of C5-10, the foaming temperature is 125-140 DEG C, and the addition amount of the small molecular alcohol is 5-10wt% of that of CO2. The preparation method is simple in process, widens the lower limit of the foaming temperature of the polypropylene, enables the polypropylene to be foamed at a lower temperature, reduces the energy consumption, and reduces the requirements on the sealing performance of equipment. In addition, the polypropylene foaming material prepared by the methodis high in foaming ratio, relatively small in pore diameter and high in cell density.