9 results about "Diethylethanolamine" patented technology

The invention discloses an organic amine composite absorbent for carbon capture and application thereof, and belongs to the technical field of carbon dioxide capture, the organic amine composite absorbent for carbon capture is in a solution state and comprises the following components: a main agent, an auxiliary agent, an accelerant A, an accelerant B and water; wherein the mass ratio of the main agent to the auxiliary agent is 2: (1-2); the mass ratio of the auxiliary agent to the accelerant A is 2: (1-2); the mass ratio of the accelerant A to the accelerant B is 2: (1-2); the total mass concentration of the main agent, the auxiliary agent, the accelerant A and the accelerant B in the organic amine composite absorbent for carbon capture is 30-40 wt%; the main agent is selected from N-methyldiethanolamine or N, N-diethyl ethanolamine, the auxiliary agent is selected from piperazine or hydroxyethyl ethylenediamine, the accelerant A is selected from triethylene glycol monomethyl ether and / or ethylene glycol monomethyl ether, and the accelerant B is selected from ethyl butyl ether and / or isobutyl ether. The organic amine composite absorbent for carbon capture has a wide application prospect in removal of carbon dioxide in flue gas.

This invention relates to a bioactivator based on L-proline structural modification, its synthesis method, and its application, belonging to the field of agricultural chemistry. The activator employs a biomimetic molecular design strategy, prepared through the splicing of active structural units. L-proline's unique natural source advantage and the important active unit fragment N,N-diethylethanolamine from DA-6 undergo an esterification reaction to yield 2-(diethylamino)ethyl-L-proline ester. Bioactivity experiments were conducted on wheat and soybean, respectively. The results showed that this compound can promote plant growth at low concentrations, exhibiting significantly better growth effects than the blank control in terms of germination rate, root length, and stem length. Furthermore, the preparation process of this invention is simple, low-cost, and easily scalable for industrial production, and it possesses good environmental compatibility. Its unique natural source advantage provides a new option for activator development and has significant potential for agricultural development.

The presently claimed invention relates to an alkaline composition for cleaning a substrate comprising i) copper or copper alloy and ii) cobalt or cobalt alloy, the composition comprising: a) at least one pH adjustor selected from diglycolamine, 4,4-diethoxy-N,N-dimethyl-1-butanamine, 3-dimethylaminopropan-1-ol, dimethylaminoethoxyethanol, N,N-dimethylisopropanolamine, ethylethanolamine, N-methyldiethanolamine, 2-(2-(methylamino)ethoxy)ethanol, 3-(methylamino)propane-1,2-diol, 2-[2-[2-(2-methoxy- ethoxy)ethoxy]ethoxy]ethylamine, 2-[2-(2-aminoethoxy)-ethoxy]-ethanol, N-butyldiethanolamine, diisopropanolamine, N-methyldiisopropanolamine, monoethanolamine, 3-dimethylamino-1,2-propandiol, 2- amino-1-butanol, 2-(2-(2-(2-aminoethoxy)ethoxy)ethoxy)ethanol, prolinol, 1-methyl-2-pyrrolidinemethanol, 1-methyl-2-pyrrolidinemethanol, 1-methyl-3-pyrrolidinol, 2-amino-2-methyl-1-propanol, N,N-dimethylethanolamine, butylethanolamine, diethylethanolamine, 3-methoxypropylamine, 4-(2-hydroxyethyl)morpholine, 4-(dimethylamino)cyclohexanol, 2-amino-2-methyl-1, 3-propanediol, or diisopropylamine; b) at least one complexing agent selected from C2 to C12 hydrocarbon having at least two sulfonic acid or carboxylic acid groups; c) at least one polymeric dispersing agent having a weight average molecular weight ≥ 1000 g / mol; and d) a solvent comprising water.

The present relates to the use of a tertiary amine selected from N-methyl diethanolamine (CAS 105-59-9), N-ethyl diethanolamine (CAS 139-87-7), N-propyl diethanolamine (CAS 6735-35-9), N-butyldiethanolamine (CAS 102-79-4), N-t-butyl diethanolamine (CAS 2160-93-2), dimethyl ethanolamine (CAS 108-01-0), diethyl ethanolamine (CAS 5 100-37-8), dipropylaminoethanol (CAS 3238-75-3), diisopropylethanolamine (CAS 96-80-0), or dibutylethanolamine (CAS 102-81-8), and / or N-(3-Aminopropyl) diethanolamine (APDEA) and / or 2,2′-(octylimino)bisethanol as biocide, wherein the biocide is an anti-microbial agent such as one or more of: bactericide, fungicide, sporicide, algaecide, antiviral, microbially stabilizing agent, including any combination thereof. Also disclosed are additives, compositions and products with said tertiary amines and methods for providing biocidal effect and microbial stability to various products.

The invention relates to a liquid-liquid two-phase absorbent for capturing low-concentration carbon dioxide. The liquid-liquid two-phase absorbent consists of N, N-diethyl ethanolamine (DEEA), hydroxyethyl ethylenediamine (AEEA) and ultrapure water (H2O). The mass percentage concentration range of DEEA is 10%-25%, the mass percentage concentration range of AEA is 15%-75%, and the balance is H2O. In a typical flue gas CO2 trapping device, by controlling the ratio of absorption liquid circulation volume to flue gas flow to be 1: 300-1: 400, the temperature of an absorption tower kettle to be 30-50 DEG C, the pressure of the absorption tower to be 101-121 kPa, the temperature of a desorption tower to be 95-110 DEG C, the pressure of the desorption tower to be 101-181 kPa and the phase splitting temperature to be 30-40 DEG C, the CO2 absorption rate can be 64.15%-100%, the desorption CO2 purity is 94%-100%, and the desorption steam energy consumption is 1.18 t steam / tCO2 to 2.55 t steam / tCO2 and is lower than the regeneration steam energy consumption of 30% MEA of a traditional absorbent; and the power consumption range is 92.6 kWh / tCO2 to 98.3 kWh / tCO2. The liquid-liquid two-phase absorbent disclosed by the invention has the advantages of high CO2 absorption capacity, low regeneration energy consumption, simplicity and convenience in process operation and the like.

A polymer suitable for high-salinity, high-suspended-matter, and low-charge oilfield fracturing fluids is disclosed, comprising the following components by weight: 20-30 parts N-methoxymethylacrylamide, 15-20 parts polyethylene glycol diacrylate, 15-20 parts acryloylmorpholine, 15-20 parts N-vinylcaprolactam, 10-15 parts polyethylene glycol monoallyl ether, 0.2-0.4 parts glycerol diallyl ether, 0.1-0.3 parts cumene hydroperoxide, 0.1-0.3 parts diethylethanolamine, and 70-90 parts deionized water. The polymer synthesized in this invention has a low charge, effectively reducing adsorption with negatively charged clay minerals in the formation, thus minimizing polymer loss and formation damage. This invention effectively solves the problem of insufficient performance of traditional polymers in fracturing fluids under special reservoir conditions, enabling efficient fracturing stimulation of high-salinity, high-suspended-matter reservoirs.

The present invention relates to the technical field of natural gas purification and treatment, and specifically to a desulfurizer, its application, and a natural gas desulfurization method. The desulfurization solvent contains a main agent, an auxiliary agent, and an additive; the main agent is a mixture of polyamide-amine and 2-tert-butylaminoethanol; the auxiliary agent is selected from N,N-diethylethanolamine and / or N-methyldiethanolamine; the additive is selected from sodium sulfite and / or potassium sorbate; based on the total mass of the desulfurizer, the main agent content is 45% to 70%; the auxiliary agent content is 30% to 55%; the additive content is 0.01 to 0.1%; in the main agent, the mass ratio of polyamide-amine to 2-tert-butylaminoethanol is not less than 0.5. Under the premise of basically not changing the existing amine-based natural gas desulfurization device, the sulfur-containing substances are removed in one step to make its H2S content less than 6 mg / m 3 , total sulfur <20mg / m 3 At the same time, the CO2 content is maintained above 1.8 mol%, making it a commercial natural gas that meets quality indicators.

This invention belongs to the field of pharmaceutical synthesis technology, specifically relating to a method for preparing chloroprocaine hydrochloride and its intermediates, and their applications. The invention uses 2-chloro-4-nitrobenzoic acid and N,N-diethylethanolamine as starting materials, and prepares nitrochlorocaine via sulfuric acid-catalyzed esterification. Nitrochlorocaine is then reduced with thiourea dioxide to obtain crude chloroprocaine. The crude chloroprocaine is then salted in hydrochloric acid and ethanol, crystallized, and dried to obtain the final product, chloroprocaine hydrochloride. This method features low cost, high product quality, high yield, simple process, high production capacity, environmental friendliness, and suitability for industrial production, thus possessing significant industrialization value.

The application discloses a carbon dioxide capturing agent and application thereof, and the carbon dioxide capturing agent contains a compound as shown in the formula (I): in the formula (I), the substituent groups R1 and R2 are each independently selected from hydrogen, an alkyl group, a hydroxyl group or an alkoxy group, the substituent groups R3, R4, R5 and R6 are each independently selected from a methyl group, an ethyl group, a n-propyl group, an i-propyl group, a n-butyl group or an i-butyl group, and n1 and n2 are integers from 1 to 4. The tertiary amine disclosed in the application has a carbon dioxide absorption effect which is obviously superior to that of the known N-methyldiethanolamine, N,N,N',N'-tetraethylmethylenediamine and N,N-diethylethanolamine and other commonly used tertiary amine carbon dioxide capturing agents.