A pressure vessel comprising a cylindrical middle section, at a first end of which there is provided a top end cover, and at the second end of which there is provided a bottom end cover, the pressure vessel comprising an outer casing, wherein at least in the cylindrical middle section there is provided an insulation arrangement on the inside of the outer casing, the insulation arrangement comprising at least one insulation material layer, and a protective layer provided on the inside of the insulation arrangement, wherein at least one insulation material layer comprises a plurality of insulation material plates, especially ceramic fibre plates, and/or the protective layer comprises a plurality of protective plates, and wherein the cylindrical middle section is provided with a plurality of rings adapted to secure the at least one insulation layer and/or the protective layer to the outer casing.

Ethylene-based polymer, LDPE, is made in a high pressure polymerization process to comprising at least the step of polymerizing a reaction mixture comprising ethylene, using a reactor configuration comprising (A) at least two reaction zones, a first reaction zone (reaction zone 1) and an i reaction zone (reaction zone i where i>2), (B) at least two ethylene feed streams, each feed stream comprising a percentage of the total make-up ethylene fed to the polymerization process, in which a first ethylene feed stream is sent to reaction zone 1 and a second ethylene feed stream is sent to reaction zone i, and (C) a control system to control the percentage of the total make-up ethylene in the ethylene feed stream sent to reaction zone 1 and the percentage of the total make-up ethylene in the ethylene feed stream sent to reaction zone i.

A process to form an ethylene-based polymer comprising, in polymerized form, ethylene and at least one acid comonomer, said process comprising polymerizing a reaction mixture comprising the ethylene and the acid comonomer, in a reactor configuration comprising at least one Secondary compressor, at least one pressurization device, and at least one reactor selected from the following: at least one autoclave reactor, at least one tubular reactor, or a combination thereof; and wherein the reaction mixture is polymerized in the presence of at least one free-radical initiator, and at a pressure of at least 1000 Bar; and wherein at least a portion of a comonomer composition comprising at least a portion of the acid comonomer used in the polymerization, is compressed, to form a compressed comonomer composition, in the pressurization device, up to a discharge pressure ranging from 1000 Bar to 4000 Bar, and at a discharge temperature (DT) from 10 C to 100 C; and wherein the compressed comonomer composition bypasses the Secondary compressor, and is fed, downstream from the Secondary compressor, into the reactor, and/or into one or more feed streams to the reactor.

Reactor for the synthesis of melamine from urea, in accordance with the high-pressure non-catalytic process, comprising: a vertical reactor body (1), at least one inlet (2) for the urea melt, a set of heating elements (3), and a central duct (7), said set of heating elements (3) being arranged inside said central duct.

A system and method for devolatilizing a carbonaceous feedstock are provided. The system includes a devolatilization reactor having a unit shell, at least one tube bundle, a pump, and a control valve. The unit shell is configured to allow a heating fluid to flow within. The at least one tube bundle is configured to allow the feedstock to flow within the tube bundle and further configured to be positioned at least partially within the unit shell. The tube bundle comprises at least one tube and at least one tube bend. The at least one tube bend is disposed external to the unit shell. The pump is configured to pump the feedstock into the at least one tube bundle. The control valve is configured to control the flow rate of feedstock into the at least one tube bundle.

A portable electric (battery) powered paint system designed to worn in a typical workman's tool belt and thus accompany the painter as he moves from wall to wall and room to room without the restriction of electrical cords plugged into wall outlets. The invention consists of a paint reservoir, an electric paint pump, a power pack of two or more 18 Volt batteries, a paint applicator and associated paint supply tubing for transfer of paint from the reservoir to the paint applicator. The invention provides the painter with a self-contained powered painting system.

An object of the present invention is to manufacture single crystals of high quality on an industrial production scale by preventing impurities from being mixed in single crystals when the single crystals are produced by the solvothermal method. A pressure vessel body 1, in which a supercritical state is maintained, is made of heat resistant alloy, a portion of the pressure vessel body is open, a corrosion-resistant mechanical lining 5 is provided on an inner face of the pressure vessel and on an entire outer circumferential edge of the opening, and the opening is sealed by an airtight mating face formed out of a corrosion-resistant mechanical lining, which is formed on the outer circumferential edge of the opening, and by an airtight mating face of the corrosion-resistant mechanical lining cover 6 on an inner face of the cover 3 through a corrosion-resistant gasket member. Since the pressure vessel body and the inner face of the cover are covered with the corrosion-resistant mechanical lining, corrosion can be prevented. The corrosion-resistant mechanical lining ensures the sealing property on the airtight mating face between the pressure vessel body and the cover and further effectively prevents corrosion in the airtight sealing portion and it becomes possible to repeatedly open and close the airtight sealing portion.

A portable supercritical fluid extraction apparatus, comprising: (i) a pressure vessel for generating a supercritical fluid therein; (ii) a liquid solvent supply tank; (iii) a means for interconnecting said pressure vessel and said liquid solvent supply tank at a predetermined angle for delivery therethrough of a liquid solvent from the liquid storage tank to the pressure vessel; and (iv) a heating component for heating contents of the pressure vessel to produce a supercritical fluid therein.

The apparatus may additionally comprise a sample in fluid communication with the pressure vessel, and a receiving vessel in fluid communication with the pressure vessel. The pressure vessel may have a heating means for heating fluid contents therein, for example a heating wrap, a heating block, or a heating jacket.

A retort system includes a vessel having an access opening accessible via a movable door, a basket supporting assembly within the vessel and along which container baskets are movable for loading into the vessel and unloading from the vessel and a heating system for heating containers for treatment within the vessel. A container basket load/unload system moves container baskets into the vessel and for moving container baskets out of the vessel, and includes a rigid chain unit aligned or alignable with the access opening such that a rigid chain can be moved along a chain feed path into the vessel via the access opening.

A system for chemical transformation of 3D state materials is disclosed wherein, a reaction group having a main body arranged to shape a reaction chamber in which a component configured to support a sample of 3D state arranged to be chemically transform is expected. The system further includes an oven arranged to heat the reaction chamber and a GAS supply group arranged to release a first gas in the reaction chamber and/or a casing component, inside the main body, which has a chemical agent suitable for releasing a second gas into the reaction chamber. The main body has at least two turbines arranged to converge into the reaction chamber, the first and/or the second gas on the samples. The invention relates also to a method for chemical transformation of 3D state materials.