4 results about "Olefiant gas" patented technology

The utility model provides a kind of methanol to olefin gas separation device, belong to gas separation equipment technical field.The utility model methanol to olefin gas separation device, including pretreatment device and separator, import is provided on pretreatment device, the inside of pretreatment device is provided with activated carbon filter screen and water absorption layer, drying cabinet is also provided on the lateral wall of pretreatment device, the lateral wall of drying cabinet is provided with several heaters, the outlet end of each heater is uniformly provided with heating rod, the inside top end and bottom end of drying cabinet are uniformly provided with rotating column, the end of rotating column, which is set on the inside top end and bottom end of drying cabinet and mutually close, is uniformly provided with fan leaf.The utility model solves the problem that water absorption layer needs to be replaced frequently, resulting in the problem of reduced separation efficiency of methanol to olefin gas separation device.

The invention relates to spherical SiC / Al-Si composite powder as well as a preparation method and application thereof, and belongs to the technical field of non-metal-containing alloys. The preparation method of the spherical SiC / Al-Si composite powder comprises the following steps that S1, spherical Al-Si pre-alloyed powder and hydrocarbon compound gas (including at least one of alkane gas, olefin gas and alkyne gas) are subjected to a carbonization reaction for 1-10 h at the temperature of 400-700 DEG C, and carbon-coated spherical Al-Si pre-alloyed powder is obtained; and S2, the carbon-coated spherical Al-Si pre-alloyed powder obtained in the step S1 is subjected to an in-situ reaction for 0.5-10 h at the temperature of 750-1000 DEG C in the inert gas atmosphere, and the spherical SiC / Al-Si composite powder is obtained. The spherical SiC / Al-Si composite powder prepared through the preparation method has good fluidity, the content of SiC in the spherical SiC / Al-Si composite powder is controllable, and the interface bonding strength of the spherical SiC / Al-Si composite powder and an Al matrix is high.

The invention relates to the technical field of selective hydrogenation purification of olefin gas, and discloses a carbon carrier, a catalyst, a preparation method of the catalyst and a selective hydrogenation purification method. The preparation method of the carbon carrier comprises the following steps: mixing artificial synthetic resin and a solvent into a group, forming and granulating, and sequentially curing, carbonizing and activating particles to obtain the carbon carrier, the activation condition comprises the step of activating the carbonized particles for 1-10 hours at the temperature of 600-1000 DEG C under the condition that the flow rate of water vapor is 0.01-0.2 g / min in a protective atmosphere. The catalyst prepared from the carbon carrier not only has relatively high strength, specific surface area, pore volume and other physical properties, but also can be directly used for acetylene hydrogenation purification in a front-end deethanization front-end hydrogenation process, and the selectivity of ethylene is improved on the basis of relatively high acetylene conversion rate.

The invention relates to the technical field of gas purification, and particularly provides an olefin gas purification method. The olefin gas purification method comprises the following steps: feeding a liquid impurity removal agent into a purifier to form an impurity removal agent liquid level at the bottom of the purifier, continuously conveying the impurity removal agent in the purifier from a bottom outlet of the purifier to a top inlet of the purifier by utilizing an impurity removal agent circulating pipeline, and feeding olefin gas into the purifier from the bottom inlet of the purifier, olefin gas passes through the impurity removal agent liquid level to be purified for the first time, the olefin gas purified for the first time rises in the purifier and makes contact with the impurity removal agent entering from the top inlet in the rising process to be purified for the second time, and the olefin gas purified for the second time is output to a gas using area from the purified olefin gas outlet. The olefin gas purification method provided by the invention is used for removing various impurities in the olefin gas at one time.