4results about How to "Efficient pyrolysis" patented technology

The invention relates to the technical field of waste plastic treatment, in particular to a waste plastic grading carbonization device and a waste plastic treatment method. The waste plastic grading carbonization device comprises a feeding hopper, a crushing device, a grinding device, a screening device, a catalyst self-adaptive proportioning device, a first spiral discharging machine, a first-stage carbonization chamber, a second-stage carbonization chamber, an activation chamber, a second spiral discharging machine, a solid product collecting device, a liquefaction device, a liquefied product collecting device, a cooling water circulating device and a third spiral discharging machine, a material returning bin and a tail gas treatment device. According to the invention, through the collaborative innovation of'grading carbonization 'and'catalyst self-adaptive proportioning device', the problems of incomplete and non-uniform carbonization of the waste plastics, inadequate utilization of gas products and the like in the pyrolysis process of the waste plastics are solved, and an industrial feasible path is provided for chemical recovery of the waste plastics; the device is reasonable in overall structural design and high in treatment energy efficiency, and continuous, sufficient and efficient pyrolysis and high-value conversion of the waste plastics are achieved.

The present application relates to a kind of methods and devices for preparing anhydrous hydrogen fluoride and sulfuric acid.The method comprises the following steps: removing impurities from industrial waste fluorosulfuric acid, mixing it with concentrated sulfuric acid to form a pretreated mixture; using microwave heating to rapidly heat the reactor, a static bed is arranged in the reactor; the pretreated mixture is passed into the upper surface of the static bed in the preheated reactor, the pretreated mixture is heated by microwave, and hydrogen fluoride and sulfur trioxide gas are generated by the decomposition of the pretreated mixture; hydrogen fluoride and sulfur trioxide are mixed and passed into low-temperature concentrated sulfuric acid to absorb sulfur trioxide gas; then passed into low-temperature condensing equipment, and liquid hydrogen fluoride is collected; the liquid hydrogen fluoride is purified by rectification; and the concentrated sulfuric acid that absorbs sulfur trioxide is evaporated and concentrated.The advantages are: using a "static bed + material" double-wave absorption system, achieving more uniform and stable temperature field distribution in the liquid layer of industrial waste fluorosulfuric acid, making the pyrolysis of industrial waste fluorosulfuric acid more efficient and stable.

The utility model provides an organic waste plasma pyrolysis and cracking integrated device, relates to the technical field of garbage resource utilization, the organic waste plasma pyrolysis and cracking integrated device comprises a box shell, a plasma torch, a pyrolysis mechanism and a feed pipe, a cracking chamber is formed in the box shell, a hydrogen outlet is formed in the box shell, and the plasma torch is arranged in the cracking chamber. The hydrogen outlet is communicated with the cracking chamber; the plasma torch is arranged on the box shell, and the output end of the plasma torch is located in the cracking chamber; the pyrolysis mechanism comprises a pyrolysis chamber arranged in the cracking chamber and an exhaust pipe, one end of the exhaust pipe is communicated with the pyrolysis chamber, the other end of the exhaust pipe protrudes out of the box shell, a sealing plug is connected to the exhaust pipe, the exhaust pipe is further communicated with a gas guide pipe, and the other end of the gas guide pipe is communicated to the plasma torch; one end of the feeding pipe is communicated with the pyrolysis chamber, and the other end is connected with a feeding furnace door. The pyrolysis chamber is arranged in the cracking chamber, the high-temperature environment in the cracking chamber is fully utilized, and the high temperature in the cracking chamber can directly act on the pyrolysis chamber, so that the pyrolysis process is more efficient, the heat loss is reduced, and the energy consumption is reduced.

The utility model belongs to heavy oil processing equipment technical field especially, a kind of ploughshare type coking machine, including frame, coking bin, power mechanism and filter system, coking bin is fixed in frame, the first baffle and second baffle that coking bin's bin body shell is equipped with will bin body be sequentially separated into pre-coking area, main reaction zone and discharge area;Power mechanism is located at the frame and drives two horizontal and parallel arrangement's rotating shaft, rotating shaft extends into the coking bin and is equipped with ploughshare group;Filter system includes at least one metal sintered mesh filter, is installed in coking bin top and is communicated with bin. By setting double rotating shaft cross ploughshare group, realize three-dimensional shearing mixing, improve material mixing uniformity, avoid caking and local overheating, set two different height baffle in closed coking bin, significantly improve pyrolysis efficiency, reduce backmixing phenomenon, ensure that material is fully reacted, mechanical seal and packing seal double protection, completely eliminate toxic gas leakage.