133 results about "Chemical equilibrium" patented technology

The invention discloses a low temperature Claus sulfur recovery process. The process mainly comprises a thermal reaction section, a catalytic reaction section and a tail gas incineration section, wherThe invention discloses a low temperature Claus sulfur recovery process. The process mainly comprises a thermal reaction section, a catalytic reaction section and a tail gas incineration section, whertion temperature, contributes to performance of chemical equilibrium towards the direction of sulfur generation, so that conversion rate and recovery rate of sulfur are improved. Moreover, the processtion temperature, contributes to performance of chemical equilibrium towards the direction of sulfur generation, so that conversion rate and recovery rate of sulfur are improved. Moreover, the process has the advantages of simple process flow, relative small equipment and investment, low operation cost and more contribution to environmental protection. The invention also discloses a device for thehas the advantages of simple process flow, relative small equipment and investment, low operation cost and more contribution to environmental protection. The invention also discloses a device for the low temperature Claus sulfur recovery process.low temperature Claus sulfur recovery process.ein in a combustion furnace of the thermal reaction section, partial hydrogen sulfide reacts with oxygen to be converted into sulfur dioxide, the hydrogen sulfide and the sulfur dioxide undergo a Clauein in a combustion furnace of the thermal reaction section, partial hydrogen sulfide reacts with oxygen to be converted into sulfur dioxide, the hydrogen sulfide and the sulfur dioxide undergo a Claus reaction to generate sulfur, and process gas after sulfur separation enters the catalytic reaction section; in the reactor of each stage of the catalytic reaction section, the hydrogen sulfide and ts reaction to generate sulfur, and process gas after sulfur separation enters the catalytic reaction section; in the reactor of each stage of the catalytic reaction section, the hydrogen sulfide and the sulfur dioxide under conventional Claus reaction, catalyst reactivation, sub-dewpoint and sub-solid point low temperature Claus reaction in sequence; after the catalyst reaction section, the tail ghe sulfur dioxide under conventional Claus reaction, catalyst reactivation, sub-dewpoint and sub-solid point low temperature Claus reaction in sequence; after the catalyst reaction section, the tail gas which is subjected to sulfur separation enters the tail gas incineration section, and the tail gas is incinerated and exhausted in the tail gas incineration furnace. The process adopts a lower reacas which is subjected to sulfur separation enters the tail gas incineration section, and the tail gas is incinerated and exhausted in the tail gas incineration furnace. The process adopts a lower reac

The disclosure provides for a chemical reaction-based thermal management system and method. The system comprises a heat source for heating a first flow element, a heat exchanger for transferring heat from the first flow element to a reaction mixture flow, and a heat sink comprising one or more endothermic chemical reactions to absorb heat from the heat exchanger. The system further comprises a reactor element for approaching chemical equilibrium of the reaction mixture flow, a product removal element for removing one or more products from the one or more endothermic chemical reactions, and a plurality of driver elements for moving the first flow element and for moving the reaction mixture flow.

The invention relates to a biocatalytic method for producing p-vinylphenols, comprising a three-stage one-pot reaction according to the following reaction scheme: (A) wherein a) an optionally substituted phenol (1) is bound to pyruvic acid (BTS) to form the optionally substituted tyrosine (2) by means of catalytic action of a tyrosine phenol-lyase (TPL) and in the presence of ammonium ions, b) ammonia is eliminated from the tyrosine (2) by means of catalytic action of a tyrosine-ammonia-lyase (TAL) or phenyl-ammonia-lyase (PAL), in order to produce an optionally substituted p-coumaric acid (3), and c) the p-coumaric acid (3) undergoes a decarboxylation by means of catalytic action of a phenolic acid decarboxylase (PAD), in order to produce the desired, optionally substituted p-vinyl phenol(4); d) wherein the resultant CO2 is removed from the reaction system, in order to move the chemical equilibrium of all three reaction steps in the direction of the products.

The invention provides a method for producing biodiesel from a grease raw material with a high acid value, which has the advantages of mild conditions, clean process and no corrosion to a device. The method is characterized by reacting glycerol instead of lower alcohols (for example methanol and ethanol) with fatty acid in presence of an acidic ionic liquid without corrosion to the device to obtain a mixture of monoglyceride, diglyceride or triglyceride, removing water generated in the reaction out of the reaction system to break the chemical equilibrium of the reaction, and then under the action of a basic catalyst, carrying out ester change reaction on the esterified products with the low acid values by virtue of a mixture of methanol, isopropanol or isobutanol to produce biodiesel (fatty acid esters) with the low acid value and a low condensation point. The ionic liquid is recycled and the process cleanness is achieved.