41results about How to "Lower the desorption temperature" patented technology

The invention discloses a complex function resin and process for preparation, and a method used for dealing with phthalate ester water body pollution. The process for preparation comprises the following procedures: swelling chlorine ball in the organic solvent; sulfonating in the mixing condition; getting the sulfonated chlorine ball after reacting; charging nitrobenzene or o-dichlorobenzene in order to swell in the air-tight condition after drying the sulfonated chorine ball; charging the accelerant in order to react; filtering the resin; washing the resin sequentially with distilled water, alcohol and chlorhydric acid 2%-5%; washing the resin with the distilled water until the washed water is neutral; getting the complex function resin. The specific surface area of the complex function resin is 900-1500m2/g, the exchange capacity of corrosive acid is 2.1-5.5mmol/g, and the sulfonic group is distributed in the micropore section, the mesopore section and the big pore section of the resin. The complex function resin is applied to deal with water body polluted by phthalate ester. The invention solves the problem that the corrosive acid of the prior complex function resin is concentrated in the mescopore and the big pore of the resin and is distributed less in the micropore, which enhances the absorption effect of the resin for phthalate ester, and enhances the acid hydrolysis catalytic activity of the resin.

The invention discloses an absorbent for ethylene efficiently separated from the gas with a light concentration of ethylene and a preparation method thereof. The absorbent is one or two metals supported on a molecular sieve and the composition of the absorbent is expressed by M-Z; Z symbolizes the molecular sieve and M is one or two selected from Ca, Ba, Sr, Ni, Co and Cu, and the weight percentage of M ranges from 10 per cent to 25 per cent; the absorbent possesses a high absorption capacity selectivity over the ethylene and the absorption capacity of the ethylene is higher than 3mmol/g under the suitable absorption conditions; the desorption temperature of the absorbent is low and the concentration of the ethylene in the desorption gas is high and the absorbent is suitable for the transformation absorption experiment equipment and is easy to be industrialized.

There is provided a sample preconcentrator. The sample preconcentrator in which a sample gas injection port is coupled to a dried gas supply source and a gas analysis system to concentrate a sample gas comprises a sample concentrating unit containing an absorbent that is composed of carbon nanotube-metal nanocomplexes; a conduit switching valve for selectively coupling the sample gas injection port to the dried gas supply source and the gas analysis system and controlling the absorption and desorption of the sample gas from the sample concentrating unit; and a plurality of conduits for connecting the sample gas injection port, the dried gas supply source, the gas analysis system, the sample concentrating unit and the conduit switching valve.

The invention discloses a garden landscape plant cultivation fertilizer which comprises the following raw materials in parts by weight: 10-20 parts of peat soil, 12-20 parts of chernozem, 12-20 parts of kieselguhr, 8-14 parts of plant ash, 8-14 parts of sawdust, 10-16 parts of vermiculite, 6-10 parts of a traditional Chinese medicine dreg extract, 2-6 parts of urea, 3-7 parts of superphosphate, 2-6 parts of diammonium phosphate, 2-4 parts of potassium sulfate, 2-4 parts of magnesium sulfate, 1-2 parts of ferrous sulfate, 2-4 parts of calcium chloride, 2-4 parts of boric acid, 3-7 parts of an alga extract, 3-7 parts of chitin and 0.5-1 part of a microbial agent. Investigation on components of the garden landscape plant cultivation fertilizer shows by accident that the traditional Chinese medicine dreg extract, the chitin and the microbial agent take a synergistic effect into play and have a mutualism relationship with plants, so that effects of nitrogen fixation, phosphorus dissolution, potassium dissolution and plant growth promotion can be achieved, plants can be prevented from being damaged by pathogenic bacteria, the fertility of soil can be effectively improved, and the garden landscape plant cultivation fertilizer is applicable to fertilization of garden landscape plant cultivation.

The invention discloses a zeolite molecular sieve-heat conducting framework composite adsorbent and a preparation method. According to the method, raw materials for preparing a zeolite molecular sieve and heat-conducting framework materials are uniformly mixed to generate reaction gel, and the zeolite molecular sieve-heat conducting framework composite adsorbent is prepared by a hydrothermal crystallization method. The porous composite zeolite molecular sieve adsorbent is synthesized by a heat-conducting framework, so that the heat transfer capability of the composite adsorbent is improved, efficient heat transfer is ensured; the problems of high desorption temperature and low mass transfer efficiency of the zeolite molecular sieve are solved, the charge capacity of the zeolite molecular sieve in VOCs (Volatile Organic Compounds) adsorption and/desorption utilization efficiency are increased remarkably; moreover, the preparation method is simple and efficient, and is suitable for industrial large-scale production.

The invention discloses a biomass intelligent fiber-based amphoteric multifunctional adsorption material and a preparation method and application thereof. The material is obtained by taking stepped dual-temperature stimuli-responsive biomass intelligent fibers as a matrix and crown ether modified amphoteric hyperbranched polyamine as a functional reagent and directly carrying out one-step cross-linking compounding on the stepped dual-temperature stimuli-responsive biomass intelligent fibers and the crown ether modified amphoteric hyperbranched polyamine by adopting a cross-linking agent. The material has stepped dual-temperature stimuli responsiveness, high amino density (greater than 12 mmol/g), carboxyl density (greater than 5 mmol/g) and a nano cavity.

The invention relates to a rare-earth modified molecular-sieve dehumidification adsorbent paper sheet and a preparation method thereof. The preparation method comprises the following steps: soaking the powder molecular sieve in a solution containing acidic rare earth, carrying out ion exchange, filtering, drying and roasting to obtain the rare-earth modified molecular sieve; and dispersing the rare-earth modified molecular sieve in silicasol under the action of ultrasound to obtain a suspension, soaking ceramic fiber paper in the suspension, taking out after the ceramic fiber paper is completely moistened, airing and drying to obtain the rare-earth modified molecular-sieve dehumidification adsorbent paper sheet. The modified molecular-sieve paper sheet has the advantages of high adsorption capacity and low regeneration temperature, can be processed into honeycomb, and is suitable for adsorption-type rotating wheel dehumidification and heat recovery under the environmental conditions of different humidities and/or different temperatures.

A high-power-density activated carbon fibre adsorption bed controlled and intensified by electrostatic charges and used for the solid-adsorptive refrigerating system is composed of an adsorption core, a casing and a closure head. Said core has the electrostatic input for the controllable charging and discharging of electrostatic charges. When said adsorption bed is in adsorption state, the positive charges are charged onto the activated carbon fibre cloth for intensifying adsorption effect. When it is in desorption state, said positive charges are discharged for lowering the desorption temp.

The invention discloses an aluminum foil-based aluminum-fumaric acid MOF adsorbent coating and a mixed solvent in-situ synthesis method and application thereof. The method comprises the following steps of: adding fumaric acid into nitrogen, nitrogen-dimethylformamide, adding aluminum salt into water, uniformly mixing the fumaric acid and the aluminum salt to obtain a mixed solution, and adjustingthe pH value to be acidic to obtain a uniform acidic reaction solution; and immersing an aluminum foil in the uniform acidic reaction solution, heating, taking out, washing, drying and activating to obtain the aluminum foil-based aluminum-fumaric acid MOF adsorbent coating. The aluminum foil-based aluminum-fumaric acid MOF adsorbent coating prepared by the invention is adjustable in thickness, isuniformly and densely distributed on the aluminum foil, and is high in bonding strength with a base material; the adsorbent coating has the characteristics of strong adsorption capacity, high adsorption speed, low desorption temperature, good cycling stability and the like. The aluminum foil-based aluminum-fumaric acid MOF adsorbent coating can be used for adsorbent coated substrates useful in airhandling systems such as heating, ventilation, and air conditioning (HVAC), as well as adsorbent coated aluminum foil finned heat exchangers for adsorptive heat pump systems.

The invention relates to a chemical-thermal desorption combined remediation method for polycyclic aromatic hydrocarbon contaminated soil. The method comprises the following steps: 1, pretreatment of the contaminated soil: sequentially crushing, grinding and screening the polycyclic aromatic hydrocarbon contaminated soil, and then adjusting the moisture content of the soil to obtain a soil sample for later use; 2, chemical pre-oxidation treatment: adding an oxidizing agent into the soil sample by adopting a dry mixing method to carry out chemical pre-oxidation treatment; and 3, thermal desorption: performing thermal desorption treatment on the soil subjected to pre-oxidation treatment under a medium-temperature condition, and then cooling to room temperature. According to the method, the contaminated soil is pre-oxidized through the oxidizing agent containing benzoyl peroxide, then the PAHs contaminated soil is subjected to thermal desorption treatment, the PAHs removal efficiency can be improved, meanwhile, the remediation temperature can be reduced, and therefore the purposes of reducing remediation energy consumption and remediation cost are achieved.

The invention discloses a preparation method of a high-load modified silica gel dehumidification rotary core, and belongs to the field of dehumidification material preparation. The method comprises the following steps of: (1) drying and purging a sample block of the dehumidification rotary core, then soaking the sample block in water glass, and then purging the sample block with hot air; (2) repeatedly and uniformly spraying the residual water glass in the step (1) onto the sample block obtained in the step (1), and then purging the sample block with hot air; (3) soaking the sample block obtained in the step (2) in a zinc salt solution in a water bath, and adjusting the pH value to an initial pH value by using acid in the reaction process; and (4) washing the sample block obtained in the step (3) with water until the sample block is neutral, and roasting and drying the sample block. According to the method, the modified silica gel dehumidification rotary core which is large in effective load capacity, good in adsorption performance and high in mechanical strength is obtained through twice dipping and metal doping process control.

The invention particularly relates to a distributed hydrogen production energy storage power generation system and a working method thereof.The system comprises a water electrolysis hydrogen production unit, a hydrogen purification and humidification unit, a fuel cell power generation unit and a solid hydrogen storage unit, and the water electrolysis hydrogen production unit is connected with the hydrogen purification and humidification unit through a pipeline; the hydrogen purification and humidification unit is respectively connected with the fuel cell power generation unit and the solid hydrogen storage unit through pipelines, and the fuel cell power generation unit is connected with the water electrolysis hydrogen production unit through a pipeline. The working method comprises a hydrogen production-hydrogen storage mode, a drying tower regeneration mode and a hydrogen storage-power generation mode. The drying tower of the hydrogen purification and humidification unit is coupled with the fuel cell power generation unit, efficient utilization of water and energy is achieved, and the system is high in safety and stability.

The invention discloses a catalyst-loaded organic matter contaminated soil thermal desorption circulating medium and a preparation method thereof. Microporous ceramic is used as a circulating body, and 5-20% of a Co-Ca-K@Fe3O4 catalyst is loaded. The calcium-potassium-cobalt composite oxide is a catalytic active component, the citric acid is a carrier complexing agent, the nano ferroferric oxide particles are carriers, and the lauryl sodium sulfate is a circulating medium dispersing agent. On the basis of the mass of the carrier, the mass percentage of the catalytic active component is 5-15%. The preparation method comprises the following steps: adding ferric salt, citric acid and an active component precursor solution into a polytetrafluoroethylene hydrothermal reaction kettle, and carrying out hydrothermal treatment, drying and roasting to obtain the Co-Ca-K@Fe3O4 catalyst. The circulating medium can synchronously catalyze and oxidize organic pollutants in the soil thermal desorption process, decompose the organic pollutants into water, carbon dioxide and the like and release heat, and can be recycled in the thermal desorption process; after being used for a period of time, the thermal medium can be abraded and broken, and the catalytic material also loses activity and is decomposed into beneficial components such as calcium oxide and potassium salt which have an improvement effect on soil.