30results about How to "Mitigate carbon formation" patented technology

A method of applying a coating the inner surface of a metal reactor chamber whereby coking resulting from the production of hydrogen from reforming hydrocarbons is reduced.

A piston for an internal combustion engine with a piston crown and a circumferentially arranged crown edge, whereby, near the periphery of the crown edge, a thermal barrier coating is applied, whereby the thermal barrier coating tapers off before the periphery of the crown edge.

A process and reactor for the production of acetic acid comprising the steps of: passing a feed stream containing ethanol and water together with a predetermined feed rate of an oxygen containing atmosphere in presence of one or more catalysts being active in simultaneous non-oxidative and oxidative conversion of ethanol to a product stream with acetic acid; recovering from the product stream a stream of acetic acid; optionally recovering reactive derivatives of acetic acid and recycling these to step (a).

A fuel processor for producing a hydrogen-containing product stream from a fuel stream and an oxidant stream is actively-cooled by a gaseous or liquid coolant which is directed to flow in contact with at least a portion of the outer shell of the fuel processor. Active cooling can improve the operating characteristics of the fuel processor as well as allowing for the use of compact fuel processor designs that would otherwise tend to have insufficient heat loss capability.

Provided are a method for preparing black yarn through direct mixing of a PET melt and special equipment of the method. The method comprises the steps that a melt is introduced from a main melt pipeline, and then a delustering agent and a dispersing agent are mixed according to a proportion; the mixture enters a double screw extruder under a negative pressure condition to be subjected to low-speed primary mixing, co-blending is conducted through an ultrasonic dynamic mixing machine, and direct spinning is conducted after mixing is conducted through a dynamic mixer. The equipment comprises an extruder assembly, an auxiliary material bin assembly, a dispersing agent bin assembly, an ultrasonic dynamic mixing assembly, a dynamic mixing assembly, a spinning metering assembly and a control box; the main melt pipeline is connected to a material outlet of a material outlet assembly, a material outlet of the ultrasonic dynamic mixing assembly is connected with the main melt pipeline through a tee joint and then communicated with the dynamic mixer, a material outlet of the dynamic mixer is communicated with a material inlet of a spinning metering pump, and a material outlet of the spinning metering pump serves as a spinning assembly connector to be connected with spinning equipment. The method for preparing the black yarn through direct mixing of the PET melt and the special equipment of the method have the advantages that the viscosity is reduced, the quality is stable, the spinnability is good, and the cost is low.

The invention discloses a processing treatment method of catalytic diesel oil. A catalytic diesel oil material is cut into a light component and a heavy component; the light component is subjected tohydrofining and hydroupgrading reactions and gasoline and diesel oil components are obtained; the obtained heavy component is separated, a triaromatic hydrocarbon component and a non-triaromatic hydrocarbon component are obtained, the obtained triaromatic hydrocarbon component is subjected to hydrofining and hydroconversion, and a gasoline component and a diesel oil component are obtained; a gasoline product is obtained after the two parts of gasoline are mixed, and a diesel oil product is obtained after the two parts of diesel oil components are mixed. Through reasonable separation and processing processes, different types of raw materials can be selectively and independently processed, so that inferior catalytic cracking diesel oil can be reasonably used to produce qualified gasoline anddiesel oil products can be produced by reasonably utilizing inferior catalytic cracking diesel oil.

The invention discloses a method for extracting phosphogypsum from an aluminum-modified composite catalyst to prepare propylene, comprising the following steps: acid leaching waste gypsum, separating and purifying aluminum to prepare γ-Al 2 o 3 , with the prepared γ‑Al 2 o 3 The sample is modified on ZSM-5 to obtain a composite catalyst, and now the methanol liquid gasification is fully contacted with the catalyst to obtain the product propylene. On the one hand, this method removes some impurities in phosphogypsum, realizes the recycling of phosphogypsum solid waste, and at the same time utilizes the properties of the impurities themselves to prepare γ‑Al 2 o 3 The @ZSM‑5 composite catalyst has a long service life and a high selectivity to propylene.

The invention belongs to the technical field of air conditioners, in particular disclosing an air compressor set capable of freezing and drying air inflow. The air compressor set comprises an air compressor, wherein a refrigerating unit is connected on the air inlet at the front end of the air compressor; a compressed air output end of the air compressor is successively connected with an oil separator and an air radiator; and the tail end of the air radiator transports dry compressed air to users by connecting tubes. The air compressor firstly dehumidify air therein in advance so that low airinflow temperature is low, air inflow area is large, low compressor energy consumption is low, small noise is small and reliability is greatly improved.