摘要:
The present invention relates to a fluidized-bed gasification furnace in a gasification and slagging combustion system for gasifying combustibles, delivering produced gas and char into a slagging combustion furnace, and combusting the gas and char at a high temperature and melting ash in the slagging combustion furnace. The fluidized-bed gasification furnace includes a fluidized bed (11) having a substantially rectangular horizontal cross section in which combustibles is gasified in a circulating flow of the fluidized medium, and at least one incombustibles discharging portion (18) defined at at least one side of the fluidized bed for discharging the fluidized medium and incombustibles accompanying the fluidized medium.
摘要:
In order to manufacture a thiol compound by causing reaction between an unsaturated compound and hydrogen sulfide, the unsaturated compound and the thiol compound being expressed by following formulas (1) and (2), respectively: CH.sub.2 .dbd.CR.sup.1 --COOR.sup.2 (1) HS--CH.sub.2 --CHR.sup.1 --COOR.sup.2 (2) where R.sup.1 represents a hydrogen atom or a methyl group, and R.sup.2 represents a hydrogen atom or a hydrocarbon group with 1 to 18 carbon atoms, (i) at least one nitrogen containing compound which is selected from the group consisting of amide compounds each having an amide group without a substituent, amide compounds each having an amide group whose nitrogen atom has a substituent hydrocarbon group with 1 to 6 carbon atoms, urea compounds each having an ureylene group without a substituent, and urea compounds in each of which at least one of two nitrogen atoms (N, N') has a substituent hydrocarbon group with 1 to 6 carbon atoms, and (ii) either a polysulfide compound or sulfur, or the both, are made to coexist in a system of reaction.
摘要:
A process for producing a modified polyaminoamide with markedly increased reactivity as an epoxy resin curing agent is disclosed. The process comprises introducing amino groups and mercapto groups into a polyaminoamide by using an aziridine compound and a thiirane compound. The modified polyaminoamide is capable of curing an epoxy resin at a low temperature and at a high rate to provide a cured epoxy resin excellent in anticorrosion and chemical resistance.
摘要:
An optical fiber cutting device provided with a speed reducing part which transmits drive force by reducing the drive speed of the external drive force, a drive force transmission part which transmits the drive force from the speed reduction part to the cutting blade holder, a cutting blade holder, a cutting blade which is held by the cutting blade holder and moves to the cutting position along with said cutting blade holder, and an optical fiber supporter which supports the optical fiber so as to be perpendicular to said cutting blade at the cutting position.
摘要:
This invention concerns a novel organic sulfide compound obtained by the reaction of a mercapto alkanol such as 2-mercapto ethanol with an unsaturated amide such as (meth)acrylamide, maleic acid diamide, or fumaric acid diamide and a method for the production of the organic sulfide compound. The invention enables novel organic sulfide compounds of great commercial utility to be obtained with a high yield on a commercial scale.
摘要:
A method of recovering ethylene sulfide from a hydrous stock solution (solution) containing ethylene sulfide, toluene (hydrophobic organic compound) having a higher boiling point than ethylene sulfide, and a compound having a higher boiling point than toluene, by distilling the stock solution continuously using a continuous fractionating tower 2, a fractionating tower 4, and a rectifying tower 5. Ethylene sulfide is distilled out with toluene and water from the continuous fractionating tower 2, and the distillate is allowed to separate into an oil layer and a water layer in a separating tank 3. The oil layer is distilled continuously by the fractionating tower 4 without being subjected to a reflux operation to distill out water with a part of ethylene sulfide. The bottom product from the fractionating tower 4 is rectified by the rectifying tower 5 to recover ethylene sulfide. Consequently, the polymerization reaction of ethylene sulfide can be suppressed and ethylene sulfide can be separated and recovered continuously in an efficient and stable manner. Also, the clogging of fractionating towers and pipes can be prevented.
摘要:
A process for producing an alkylene sulfide, which comprises the step of subjecting a mercaptoalkanol to an intramolecular dehydration reaction in the presence of an acidic dehydration catalyst, to produce the alkylene sulfide, in which the intramolecular dehydration reaction is conducted under at least one conditions of (1) to (3). (1) The intramolecular dehydration reaction is conducted in at least one solvent selected from the group consisting of compounds having an amide group N-substituted with a hydrocarbon group having from 1 to 6 carbon atoms, compounds having an unsubstituted amide group, compounds having a ureylene group N-substituted with a hydrocarbon group having from 1 to 6 carbon atoms, and compounds having an unsubstituted ureylene group. (2) The intramolecular dehydration reaction is conducted in a solvent under such temperature and pressure conditions that the reaction temperature T (.degree.C.) and the boiling point tb (.degree.C.) of the solvent at the reaction pressure satisfy equation (tb-30).ltoreq.T.ltoreq.tb. (3) The intramolecular dehydration reaction is conducted in a solvent in the presence of a hydrocarbon having a boiling point at ordinary pressure of from 30.degree. C. to 180.degree. C. When the hydrocarbon has from 6 to 9 carbon atoms, the above-described effects are enhanced further. When the concentration of the hydrocarbon in the reaction mixture is maintained in the range of from 0.1 to 10% by weight, the above-described effects are enhanced even more.
摘要:
A compact exhaust gas treating apparatus which is improved in the bag filter performance in order to reduce the amount of dioxin contained in exhaust gas discharged from municipal refuse incineration equipment, industrial waste incineration equipment, etc. An activated carbon filter is disposed along the filter cloth of the bag filter at the purified gas outlet side of the filter cloth so that exhaust gas passes through the activated carbon filter after passing through the filter cloth, thereby being purified.
摘要:
In a process for preparing alkylene sulfides through the intramolecular dehydration reaction of mercaptoalkanols in a gaseous phase, catalysts are used, which are represented by the formula: M.sub.a X.sub.b Y.sub.c O.sub.d, where M represents at least one element selected from the group of alkali metals, alkaline earth metals and thallium; X represents at least one element selected from the group of Al, B, Si and P; Y represents at least one element selected from the group consisting of lanthanides, IIIA group, IVA group, VA group, IIIB group, IVB group, VB group and VIB group, excluding an element contained in M or X; O represents oxygen; and a and b are numerical values not equal to 0; b=0.2-100 and c=0-50 when a=1; and d is a numerical value determined according to a, b and c.
摘要:
A method of and apparatus for dewatering a substance which is to be dewatered such as sludge wherein the substance to be dewatered is pressed between a pair of rollers (11, 212) or plate-shaped press members (331) each having its press surface formed from a rigid porous material (6, C, 331) having water absorption and retention properties based on the capillary action; water squeezed from the substance by pressing is permeated into the rigid porous material due to water absorption based on the capillary action or water pressure and the permeated water is retained by virtue of the water retention properties based on the capillary action, thereby dewatering the substance; and the water retained by the rigid porous material is discharged by sending pressurized air to regenerate the capillary tubes.