59 results about "Perfluorinated compound" patented technology

The invention provides a BP neural network and MPSO algorithm-based aluminum electrolysis energy-saving and emission-reduction control method. Firstly, the modeling is conducted for the aluminum electrolysis production process based on the BP neural network. After that, based on the multi-objective particle swarm optimization (MPSO) algorithm, the model for the aluminum electrolysis production process is optimized to obtain a group of optimal solutions for each of all decision variables, the current efficiency, the energy consumption per ton of aluminum and the discharge of perfluorinated compounds corresponding to the group of optimal solutions. No crossover or mutation operation is required for the MPSO algorithm, so that the coding process is simple and easy in implementation. Meanwhile, compared with other algorithms, the MPSO algorithm has memory. In this way, not only a global optimal value and a local optimal value are retained, but also the optimal value integrity during the group evolution process is ensured. Based on the above method, the process parameters of the aluminum electrolysis production process are ensured to be optimal, and the current efficiency is effectively improved. The energy consumption per ton of aluminum is lowered, and the greenhouse gas emission load is reduced. The purposes of energy saving and emission reduction are really realized.

A method for recovering perfluorinated compound from sewage, which comprises the following steps: an electric flocculation step, using an electric flocculation method to adsorb the perfluorinated compound in an aqueous solution or a water-organic solvent mixed solution onto the surface of flocs produced by electric flocculation to form sludge; an elution step, carrying out an organic solvent elution treatment on the above-mentioned sludge containing perfluorinated compound to separate the perfluorinated compound from the sludge and form a concentrated perfluorinated compound solution; and a distillation step, distilling the produced concentrated perfluorinated compound solution to obtain perfluorinated compound solids and a distillate, the distillate being used as an elution liquid of the above-mentioned elution step. Zn(OH)2 flocs produced in situ by electric flocculation have a very high adsorption capacity and a fast adsorption rate for the perfluorinated compound and can recover high-concentration and low-concentration perfluorinated compounds from sewage and purify the sewage simultaneously. Since the electric flocculation treatment has low costs and low sludge production amount, the large-scale application of the method is economically feasible.

The invention discloses an optimization method for energy conservation and emission reduction of aluminum electrolysis based on decision maker preference information. Firstly, a recursive neural network is used to model an aluminum electrolysis production process, and then a decision maker sets a desired target value, an R-dominance preference dominance method is introduced, a multi-objective quantum particle swarm algorithm is combined to optimize a production process model, and an optimal decision variable that best meets the expectation of the decision maker, and the corresponding current efficiency, cell voltage, perfluorinated compound emissions and the energy consumption per ton of aluminum are further obtained. The MQPSO algorithm does not need to perform crossover and mutation operations, and only requires the simplest location update step, so that the encoding process is simple, a strong global search capability is realized, the integrity of a preference optimal value in the process of population evolution can be easily implemented, and the needs of the decision maker can be met. By using the method to determine the optimal value of process parameters in the aluminum electrolysis production process, the current efficiency can be effectively improved, the cell voltage can be reduced, the greenhouse gas emissions and the energy consumption per ton of aluminum can be reduced, and the purpose of energy conservation and emission reduction can be achieved.

The present invention relates to the compound of general formula (I): A-B-C (F, G')-D-E-F-G-A' or the compound of general formula (II): A-B-C (F ', G')-D-B-E-F-G-A' (II), wherein -A is at least one selected from perfluorocarbons (PFCs), perfluorinated silicon compounds and / or Molecules in the group of further perfluorinated compounds, -B is at least one predetermined breaking point in the form of a physically, chemically or enzymatically cleavable bond, -C is absent or is at least one linking molecule, -D is absent or is at least one spacer Molecule, -E is at least one member selected from the group consisting of nucleobases, nucleosides, nucleotides, oligonucleotides, nucleic acids, modified nucleobases, modified nucleosides, modified nucleotides, modified oligonucleotides , modified nucleic acids, peptide nucleic acid monomers, peptide nucleic acid oligomers and peptide nucleic acids or other nucleic acid analogues in the group of molecules, -F, F' is absent or is at least one ligand, -G, G' is absent Or be at least one marker molecule, -A' does not exist or is the meaning of A, and wherein compounds i), ii), iii), iv), v), vi) are excepted. The present invention also relates to the use of said compound for the non-viral transfer of molecule E into cells, the pharmaceutical composition containing said compound, and the use of said pharmaceutical composition.