7 results about "Solid circulation" patented technology

The utility model discloses a multi-stage gas-solid circulation reactor, which is applied to the technical field of chemical gas-solid reaction, a single-stage circulation structure is formed among an inner sleeve, a gas distributor, a solid particle feed port and a solid particle discharge port, and the single-stage circulation structure is arranged in a multi-stage manner, so that solid fluidization can be realized, and the gas-solid circulation reactor can be used for gas-solid reaction. The stirring effect is achieved in a circulating mode, the gas-solid contact time is prolonged, the heat transfer and mass transfer efficiency is improved, dead zones and deposition of solid materials in the reactor are reduced, the advantages of a gas-solid fluidized bed reactor and a stirring kettle reactor are integrated, the conditions in the reactor are more controllable due to the multi-stage design, and finally the gas utilization rate is high; compared with a stirred tank reactor, the reactor has the advantages of high product yield, low overall energy consumption, no complex mechanical structure, small shear stress in the reactor and weakening of the damage to solid particles, and has good application prospect and value in favor of clean production as a special fluidized bed.

The invention discloses a wastewater treatment method for extracting iron and copper from copper hydrometallurgy raffinate. The method comprises the following steps: adding an alkaline solution into a copper hydrometallurgy raffinate to enable ferric iron to form ferric hydroxide precipitate, carrying out solid-liquid separation and washing, and calcining the precipitate to obtain an iron oxide red product; iron powder is added into the liquid, copper ions are reduced into metal copper, and solid-liquid separation is carried out on the metal copper and the remaining iron powder through precipitation; solid circulation is used for reducing iron powder, then copper powder purification is conducted, and pure copper powder is obtained; and adding an alkaline substance into the liquid to adjust the pH to be neutral, carrying out solid-liquid separation, discharging clear water reaching the standard, and carrying out sludge dewatering treatment. After the iron in the wastewater is utilized by the method, the alkali required by the neutralization reaction is obviously reduced, and the alkali consumption of lime is reduced by more than 2 / 3; the waste residue amount is reduced by about 70%, and the water quality is stable and reaches the standard for discharge. Iron and copper in the raffinate are recycled, iron oxide red and copper powder products are produced, remarkable economic benefits are brought, and unification of environmental benefits and economic benefits is achieved.

A fluid coking operation for converting bitumen to lighter hydrocarbons can be controlled or monitored using a stripper fouling indicator to mitigate foulant accumulation on the sheds of the stripper within the lower section of the coker and avoid flooding. The stripper fouling indicator can be linked to the liquid carry-under to the stripper which can be correlated to certain measurable variables such as which feed nozzles are used for bitumen injection, solids circulation rate of the coke particles, and reactor temperature. The coking can be kept below the stripper fouling indicator to avoid flooding while operating with high yield and performance.

This invention discloses a circulating fluidized bed solid circulation rate adjustment system based on average particle size, comprising a solid circulation rate measuring device, a solid particle size measuring device, a storage device, and an adjustment device. Specifically, the solid circulation rate measuring device measures the specific value of the solid circulation rate during circulating fluidized bed operation; the solid particle size measuring device measures the resistance of the compacted solid particles inside the metal tube, compares it with the resistance characteristic curve of the solid particles, and analyzes to obtain the average particle size; the measured solid circulation rate is compared, and if it is within the required operating range, no adjustment is made; if the solid circulation rate is outside the required operating range, the adjustment device controls the discharge rate of the quartz sand bin to change the particle size of the solid particles in the circulating fluidized bed, thereby adjusting the solid circulation rate and realizing the control of the load change of the circulating fluidized bed boiler. This system efficiently and directly solves the problem of solid circulation rate adjustment in circulating fluidized beds, with fast response and excellent effect.

The present invention discloses an oil-water separation and liquid-solid separation system and method, including a pre-emulsification oil removal and liquid-solid separator and an emulsified oil fine separator. The beneficial effects of the present invention are: providing a horizontal liquid-solid pre-separator for pre-removal of insoluble matter, a liquid-solid fine filter membrane assembly for fine removal of insoluble matter, a liquid-solid circulation and oleophilic and hydrophobic filler fluidized bed coupling pre-emulsification separation part, a hydrophilic and oleophobic filler barrier for removal of floating oil and dispersed oil, and an emulsified oil demulsification membrane assembly for fine removal of emulsified oil, a multi-zone synergistic enhanced treatment process, which achieves the simultaneous and efficient removal of insoluble matter and oil phase, solves the problem of easy clogging of oil removal materials and insoluble matter removal materials when the oil phase and insoluble matter are removed simultaneously, greatly extends the equipment operation cycle, and reduces the cost of oil-water separation and liquid-solid separation.

According to the removal system for the insoluble organic matters in the aquatic product processing wastewater and the construction method of the removal system, the removal system comprises the magnetic liquid-solid circulation separator and the magnetic composite particles, and the magnetic composite particles are arranged in the magnetic liquid-solid circulation separator and used for adsorbing the insoluble organic matters in the wastewater; the device structurally comprises a barrel body, a return pipe, an air outlet pipe, an aeration device and a liquid inlet mechanism, according to the magnetic liquid-solid circulation separator matched with the magnetic composite particles, through simulation operation, the operation effect of the magnetic liquid-solid circulation separator under assumed parameters is predicted, the parameter regulation and control work efficiency is improved, it is guaranteed that the magnetic liquid-solid circulation separator maintains a stable solid-liquid-gas fluidization state, and the magnetic composite particles can be recycled. And the magnetic composite particles are matched for use, so that insoluble organic matters such as grease and protein in the aquatic product processing wastewater are efficiently recycled.