40results about How to "Eliminate environmental concerns" patented technology

The invention discloses a method of preparing m-phthalic acid diglycol ester-5-sulphonate by directly esterifying m-phthalic acid-5-sulphonate. The m-phthalic acid-5-sulphonate (SIPA) and glycol (EG) are used as raw material and are directly esterified to prepare the m-phthalic acid diglycol ester-5-sulphonate (SIPE); the esterification rate is more than 99 percent, the acid value is less than 1(mgKOH/g), and the content of diglycol (DEGA) is less than 2.0 percent. Therefore, the m-phthalic acid diglycol ester-5-sulphonate (SIPE) which is manufactured by adopting the method is almost esterified completely; the disadvantages of high equipment investment, high recovery cost of methanol, and going against environment protection are elminated when the m-phthalic acid diglycol ester-5-sulphonate (SIPE) is prepared by using dimethyl-m-phthalate-5-sulphonate (SIPM) through an interesterification method; the m-phthalic acid diglycol ester-5-sulphonate (SIPE) has the characteristics of low acid value, high purity, less byproducts, etc.; the m-phthalic acid diglycol ester-5-sulphonate (SIPE) is used as a dye modifier or a third monomer and is added in polyester, so that the mass-producing demand is achieved; the method is a preparation method with stable way and excellent quality.

The invention relates to an insulating paint of non-oriented silicon steel and discloses an insulating paint of semi-inorganic environmental non-oriented silicon steel insulating paint and an application thereof. The paint of the invention comprises the following components by weight percent: 5-20% of magnesium isopropylate, 5-25% of polyurethane-acrylate-ethylene oxide resin, 5-40% of aluminium dihydrogen phosphate, 5-10% of zinc acetate, 11-30% of colloidal silica, 1-5% of non-ionic surface active agent and the balance deionized water. The insulating paint of semi-inorganic environmental non-oriented silicon steel insulating paint of the invention can not only completely eliminate the environmental problem caused by chromium element, but also ensure that all the performances of the paintsuch as uniformity, corrosion resistance, heat resistance, weldability and the like are good.

The invention relates to a method for preparing alkyd resin with crude terephthalic acid instead of most of phthalic anhydride. Its characters show as follow: firstly, it uses 45~60wt% of the fatty acid ,14~20wt% of polyol, 9~25wt% of crude terephthalate, and 0.08~0.12wt% of tributyltin catalyst for esterification, after it comes to be transparent, then it adds 1.0~5.0%wt of diphenyl formylic anhydride, 6~14wt% of rosin, 1.0~5.0 wt% of benzoic acid for a further esterification till acid number to be below 14 and grignard viscosity to be 8~11 seconds.

The invention discloses a city intelligent drainage control system based on a hierarchical control structure, which consists of two relatively independent and interconnected upper network control systems and a pump station site control system with a downstream PLC as the core. The city intelligent drainage control system has the hierarchical control structure with a number of control cores for the large-system design, an industrial personal computer that is high in computing power and convenient in networking is constructed as the upper control core of the pump station, the network-based remote control system is established, global operating condition flow and water level are measured in real time, and according to the extreme value principle and optimization theory, appropriate optimization and coordination control strategies and scheduling methods are devised. At the same time, the reliable-performance PLC is used as the lower control core to construct the local intelligent control system, to ensure long-term non-stop operation of the drainage system to intelligentize the urban distributed pumping station drainage system, and to improve the level of urban waterlogging prevention.

The invention discloses a novel environment-friendly multifunctional satellite type washing-free gravure direct printing technology. An existing satellite type flexo printing machine and environment-friendly washing-free water-based ink are adopted. Different from the existing satellite type flexo printing machine, a large-diameter center roller serves as a base material bearing roller, and the material of the large-diameter center roller is rubber not steel; and a printing plate is gravure, the electric carving technology is adopted, and the material of the printing plate is steel not flexible material. The center large-diameter roller also serves a guide belt for printing fabric, a guide belt glue automatic feeding device and an automatic cleaning device are arranged, the rubber on the surface of the center large-diameter roller is coated with the guide belt glue, the fabric is attached to the rubber large roller for direct printing, the problem that multiple color registers do not have tension is solved, and registration is accurate. The characteristics that occupied space is smaller than the occupied space of an existing photogravure press, few printing materials are wasted, cost is saved, the machine table efficiency is high, and printing of multifunctional materials is wide; and steaming washing is not needed, and the fabric is more bright in color/higher in depth sense compared with fabric printed by the existing satellite type flexo printing machine are achieved.

The invention relates to the technical field of chemical production, and discloses a safety slag discharge device for fluidized fluidized furnace. The device includes a slag discharge pipe, a gas purging ring, a slag discharge cut-off valve, a gas cut-off valve, a slag discharge tank and a slag receiving hopper. The invention has simple equipment, uses nitrogen to purge the material in the slag discharge shut-off valve and the slag discharge pipeline through the gas purging ring, avoids the blockage or jamming of the slag discharge shut-off valve by granular materials, and realizes the safety, continuity and reliability of the fluidized fluidized furnace. Controlled slag discharge eliminates the safety accidents and environmental protection accidents caused by it.

Disclosed is a d ump leaching processing method for waste furnace-constructing refractory materials of an aluminum electrolytic bath. The method comprises the following steps that the waste furnace-constructing refractory materials which are sorted from bath residues generated in overhaul the aluminum electrolytic bath are crushed and screened, and then pre-leaching, dump leaching and washing are circularly conducted on the waste furnace-constructing refractory materials; generated pre-leached liquid and dump leached liquid are subjected to oxidative decyanide treatment and then are filter-pressed; and CO2 gas is led in filter-pressed filtered liquid, then the filter-pressed filtered liquid is subjected to carbon-neutralization treatment, through concentration and crystallization, sodium salt is recovered, and mixture of fluorinated NaHCO3, fluorinated Na2CO3 and NaF is obtained. By means of the dump leaching processing method, innocent treatment and comprehensive using of the waste furnace-constructing refractory materials of the aluminum electrolytic bath can be achieved.

A degradable TPU preparation method based on recycled PET comprises the following steps: a first stage: hydrolyzing PET; a second stage of preparing high-molecular dihydric alcohol; a third stage of preparing the degradable TPU. The degradable TPU formed by the preparation method disclosed by the invention has good degradation performance. The product is beneficial to environmental protection, also has good basic physical properties, can be suitable for high-end products, and is wide in application range. Meanwhile, when the PET is recycled, the modes of acidolysis, alkaline hydrolysis, alcoholysis and the like are not used, but a high-temperature deionized hydrolysis mode is used, so that the environmental protection problem in the manufacturing process is avoided, and waste caused by use of petrochemical raw materials is avoided.

The invention relates to the technical field of electroplating ink, and discloses single-component low-temperature curing imitation electroplating ink, wherein a formula of the ink is prepared from the following components: 5-15 parts by weight of acrylic resin, 0.5-1.5 parts by weight of phenoxy resin, 10-40 parts by weight of silver powder of which the particle size D100 is less than or equal to 200 nm, 50-80 parts by volume of a solvent, 0.1-0.3 part by volume of a leveling agent, 1-3 parts by volume of a defoaming agent, 0.25-1.5 parts by volume of a coupling agent, 0.1-0.5 part by volume of a wetting agent, 0.05-0.2 part by volume of an anti-settling agent, 1-5 parts by volume of a dispersant, and 1-5 parts by volume of a curing agent. The slurry ink disclosed by the invention has high temperature resistance and high calendering tensile property, and can be subjected to high-temperature hot-pressing secondary forming after printing curing, and the surface of the slurry ink does not crack and fall off after high-temperature hot-pressing secondary forming. Meanwhile, the prepared ink is good in stability in a normal-temperature state and long in storage period.

The invention belongs to the technical field of gas separation, and relates to a device and method for inhibiting corrosion of a membrane separation carbon dioxide trapping process. The method utilizes the water absorption of a membrane component, and enables flue gas to avoid a compressor and directly enter a membrane separator to wet the membrane component by additionally arranging a pipeline and a valve, thereby achieving the purpose of flue gas dehydration; and dehydrated flue gas is recycled to enter the compressor to be compressed and then enters the membrane separator again, and finally, the carbon dioxide in the flue gas is captured by a membrane separation method. According to the method provided by the invention, the problem of corrosion of the flue gas to the compressor in the traditional membrane separation process can be remarkably reduced, and meanwhile, the saturated water in the flue gas is used for wetting the membrane module, so that the step of supplementing processwater into the system is reduced, the discharge of process wastewater is further reduced, and the environmental protection problems of wastewater collection, treatment and the like are avoided. The method has a good application prospect in the technical field of flue gas carbon dioxide capture.

The invention discloses a coke pit exhaust gas collecting and purifying system which is arranged in a position of a coke outlet of a coke pit. The system comprises gas collecting hoods, a gas collecting fan and a coke adsorption tower. The gas collecting hoods are arranged at the coke outlet of the coke pit and are connected to the gas collecting fan through a connecting pipeline, and the gas collecting fan is connected to the coke adsorption tower through the connecting pipeline. A spray pipe is arranged at the bottom of the gas collecting hood, a plurality of spray ports for spraying condensate water are arranged on the spray pipe, and multiple layers of baffle plates are arranged in the gas collecting hood; the coke adsorption tower comprises a tower body, and packing, a mist capturingsystem and a spraying system arranged in the tower body, wherein the packing is located in a middle section of the tower body, the mist capturing layer is located above the packing, and the spraying system is located above the mist capturing layer. By additionally arranging two gas collecting hoods at the coke outlet of the coke pit, more than 90% of coke powder and water vapor are extracted to the coke adsorption tower through the gas collecting fan to be treated and discharged by reaching the standard.