Abstract: Provided is a microorganism that is able to efficiently produce protocatechuic acid or a salt thereof by using a saccharide as a raw material, and a method of efficiently producing protocatechuic acid or a salt thereof by using the microorganism. Provided is a transformant having protocatechuic acid producing ability, subjected to modifications (A), (B), and (C) below: (A) enhancement of 3-dehydroshikimate dehydratase activity; (B) enhancement of chorismate pyruvate lyase activity; and (C) enhancement of 4-hydroxybenzoate hydroxylase activity. Also provided is a method of producing protocatechuic acid or a salt thereof, including the step of culturing the transformant in a reaction solution containing a saccharide so as to cause the transformant to produce protocatechuic acid or a salt thereof.

Abstract: The mutant chorismate-pyruvate lyase (A) or (B) as described below is capable of producing 4-hydroxybenzoic acid or a salt thereof with sufficient practical efficiency. (A) A mutant chorismate-pyruvate lyase obtained by replacing the valine at position 80 in a chorismate-pyruvate lyase (ubiC) from Pantoea ananatis consisting of the amino acid sequence of SEQ ID NO: 1 with one or more other amino acids. (B) A mutant chorismate-pyruvate lyase obtained by replacing an amino acid in another chorismate-pyruvate lyase, the amino acid being at a position enzymologically homologous with that of the above valine, with one or more other amino acids.

Abstract: A coryneform bacterium transformant engineered by the following (A) to (D): (A) enhancement of 3-deoxy-D-arabino-heptulosonate-7-phosphate (DAHP) synthase activity; (B) prevention, inhibition, or reduction of intracellular sugar uptake mediated by phosphotransferase system (PTS); (C) enhancement of intracellular sugar uptake activity mediated by a sugar transporter different from phosphotransferase system and enhancement of glucokinase activity; and (D) enhancement of glyceraldehyde-3-phosphate dehydrogenase (GAPDH) activity is capable of efficiently producing shikimic acid or the like from a sugar.

Abstract: A steam supply system that can reheat CO2 absorbing liquid without lowering performance of a reboiler by decompressing a condensed water drum is provided. This system includes a reboiler that raises the temperature of absorbing liquid contacted with exhaust gas discharged from a boiler to absorb CO2 in the exhaust gas and heated to eliminate CO2. The reboiler includes a heat exchanger tube to which steam for heating is supplied and a condensed water drum that recovers condensed water of the steam introduced from the heat exchanger tube as steam drain, and the condensed water drum is provided with decompression unit that lowers pressure in the condensed water drum.

Abstract: A transformant constructed by introducing a gene which encodes an enzyme having chorismate-pyruvate lyase activity into a coryneform bacterium as a host is capable of efficiently producing 4-hydroxybenzoic acid or a salt thereof from a sugar. When the transformant is cultured under aerobic conditions where the transformant does not grow, 4-hydroxybenzoic acid or a salt thereof can be produced in a particularly efficient manner.

Abstract: Included are a CO2 absorber for removing CO2 from a CO2-containing flue gas with a CO2 absorbent, an absorbent regenerator for regenerating the absorbent, a rich solution supply line for supplying the rich solution from the absorber to a rich solution supply portion of the regenerator, a rich/lean solution heat exchanger for exchanging heat between the rich solution and the lean solution, a first rich solution dividing line for dividing the rich solution at a first dividing portion in the rich solution supply line and supplying the divided rich solution at a first supply position on a side wall of the regenerator, a first rich solution heat exchanger for preheating the divided rich solution, and a first flow rate control device for controlling a flow rate of the divided rich solution such that the rich solution is preheated to a predetermined temperature in the first rich solution heat exchanger.

Abstract: A coryneform bacterium transformant engineered by the following (A) to (D): (A) enhancement of 3-deoxy-D-arabino-heptulosonate-7-phosphate (DAHP) synthase activity; (B) prevention, inhibition, or reduction of intracellular sugar uptake mediated by phosphotransferase system (PTS); (C) enhancement of intracellular sugar uptake activity mediated by a sugar transporter different from phosphotransferase system and enhancement of glucokinase activity; and (D) enhancement of glyceraldehyde-3-phosphate dehydrogenase (GAPDH) activity is capable of efficiently producing shikimic acid or the like from a sugar.

Abstract: An objective of the present invention is to provide a microorganism capable of efficiently producing aniline from aminobenzoic acid, and a process for efficiently producing aniline from aminobenzoic acid. To achieve the objective, provided is an aniline-producing transformant constructed by introducing a gene which encodes an enzyme having aminobenzoate decarboxylase activity into a coryneform bacterium as a host, characterized in that the enzyme having aminobenzoate decarboxylase activity is composed of an amino acid sequence which is the same as that represented by SEQ ID NO: 2 except for having a mutation of at least proline (P) at position 309 from the N terminus.

Abstract: A transformant constructed by introducing a gene which encodes an enzyme having chorismate-pyruvate lyase activity into a coryneform bacterium as a host is capable of efficiently producing 4-hydroxybenzoic acid or a salt thereof from a sugar. When the transformant is cultured under aerobic conditions where the transformant does not grow, 4-hydroxybenzoic acid or a salt thereof can be produced in a particularly efficient manner.

Abstract: A CO2 recovery system includes an absorption apparatus that brings a CO2 absorption liquid into contact with an exhaust gas treated by a pre-treatment apparatus so that CO2 in the exhaust gas is absorbed into the CO2 absorption liquid; a regeneration apparatus that separates CO2 from the CO2 absorption liquid; an absorption liquid circulation path that circulates the CO2 absorption liquid between the absorption apparatus and the regeneration apparatus; and an impurity removal unit that removes impurities having a high concentration in the absorption liquid circulation path, in the absorption liquid circulation path and/or in the pre-treatment apparatus in advance.

Abstract: The mutant chorismate-pyruvate lyase (A) or (B) as described below is capable of producing 4-hydroxybenzoic acid or a salt thereof with sufficient practical efficiency. (A) A mutant chorismate-pyruvate lyase obtained by replacing the valine at position 80 in a chorismate-pyruvate lyase (ubiC) from Pantoea ananatis consisting of the amino acid sequence of SEQ ID NO: 1 with one or more other amino acids. (B) A mutant chorismate-pyruvate lyase obtained by replacing an amino acid in another chorismate-pyruvate lyase, the amino acid being at a position enzymologically homologous with that of the above valine, with one or more other amino acids.

Abstract: Provided is an aniline-producing transformant constructed by introducing a gene which encodes an enzyme having aminobenzoate decarboxylase activity into a coryneform bacterium as a host. Also provided is a process for producing aniline, which comprises a step of allowing the transformant to react in a reaction mixture containing aminobenzoic acid, an ester thereof, and/or a salt thereof under reducing conditions, and a step of recovering aniline from the reaction mixture.

Abstract: In a dehydration equipment, a regenerative gas heater heats a portion of CO2 gas dehydrated in an adsorption tower that is performing an adsorption process and supplies the gas to an adsorption tower that is performing a regeneration process. A regenerative gas preheater performs heat exchange between the CO2 gas that will be supplied to a regenerative gas heater and the CO2 gas sent out from the adsorption tower that is performing the regeneration process. Then, in the dehydration equipment, a regenerative gas cooler cools the CO2 gas that has been sent out from the adsorption tower that is performing the regeneration process and exchanged heat, separates water from the cooled CO2 gas, and returns the resulting gas to the adsorption tower. Thus, the dehydration equipment can prevent an increase in utility consumption due to the regeneration process.

Abstract: Provided is a phenol-producing transformant constructed by transferring a gene which encodes an enzyme having chorismate-pyruvate lyase activity and a gene which encodes an enzyme having 4-hydroxybenzoate decarboxylase activity into a coryneform bacterium as a host. Also provided is a process for producing phenol, which comprises a step of allowing the transformant to react in a reaction mixture containing a saccharide under reducing conditions, and a step of collecting phenol from the reaction mixture.

Abstract: SOx removal equipment 15 which reduces sulfur oxides from flue gas 12 from a boiler 11, a cooler 16 which is provided on the downstream side of the SOx removal equipment 15 so as to reduce the sulfur oxides from the flue gas and decrease a gas temperature, CO2 recovery equipment 17 which includes an absorber for bringing CO2 in the flue gas into contact with a CO2 absorption liquid so as to be reduced and a regenerator for causing the CO2 absorption liquid to emit CO2 so as to recover CO2 and regenerate the CO2 absorption liquid, and ammonia injection equipment 22 for reducing a mist generation material which is a generation source of mist that is generated in the absorber of the CO2 recovery equipment before introducing the flue gas to the CO2 recovery equipment, are included.

Abstract: There is provided a dehydration-compression system 10 in which CO2 loss is suppressed, and a CO2 recovery system including the dehydration-compression system. The dehydration-compression system 10 of the present invention includes multiple compressors 50 and a dehydration device 60. The dehydration device 60 includes: a contactor 62 which removes H2O contained in CO2 by absorbing the H2O into an dehydration solvent; a recovery part 74 which recovers the CO2 from the dehydration solvent discharged from the contactor 62; and a first circulating passage L31 which carries the CO2 released from the recovery part 74 to the upstream side of the contactor 62.

Abstract: Provided is an aniline-producing transformant constructed by introducing a gene which encodes an enzyme having aminobenzoate decarboxylase activity into a coryneform bacterium as a host. Also provided is a process for producing aniline, which comprises a step of allowing the transformant to react in a reaction mixture containing aminobenzoic acid, an ester thereof, and/or a salt thereof under reducing conditions, and a step of recovering aniline from the reaction mixture.

Abstract: SOx removal equipment 15 which reduces sulfur oxides from flue gas 12 from a boiler 11, a cooler 16 which is provided on the downstream side of the SOx removal equipment 15 so as to reduce the sulfur oxides from the flue gas and decrease a gas temperature, CO2 recovery equipment 17 which includes an absorber for bringing CO2 in the flue gas into contact with a CO2 absorption liquid so as to be reduced and a regenerator for causing the CO2 absorption liquid to emit CO2 so as to recover CO2 and regenerate the CO2 absorption liquid, and ammonia injection equipment 22 for reducing a mist generation material which is a generation source of mist that is generated in the absorber of the CO2 recovery equipment before introducing the flue gas to the CO2 recovery equipment, are included.

Abstract: A phenol-producing transformant is provided which can efficiently produce phenol from a saccharide. A gene which encodes an enzyme having tyrosine phenol-lyase activity is transferred into Corynebacterium glutamicum as a host. A process for producing phenol is provided having a step of reacting the transformant in a reaction mixture containing a saccharide under reducing conditions, and a step of collecting phenol from the reaction mixture.

Abstract: A transformant obtainable by introducing one or more of the following DNAs (a), (b), and (c) into a coryneform bacterium as a host. (a) A DNA which encodes acetohydroxy acid synthase derived from Corynebacterium glutamicum and which has a mutation changing the glycine at position 156 to glutamic acid (G156E) in an amino acid sequence encoded by the DNA, or an analog thereof. (b) A DNA which encodes acetohydroxy acid isomeroreductase derived from Corynebacterium glutamicum and which has mutations changing the serine at position 34 to glycine (S34G), the leucine at position 48 to glutamic acid (L48E), and the arginine at position 49 to phenylalanine (R49F) in an amino acid sequence encoded by the DNA, or an analog thereof. (c) A DNA which encodes leucine dehydrogenase derived from Lysinibacillus sphaericus, or an analog thereof.