5results about How to "Good technical and economic effect" patented technology

The invention discloses a petroleum and petrochemical wastewater treatment system, which relates to the technical field of wastewater treatment and comprises an exclusive strain in-situ production device, a compact sludge separation device and a strain sludge loading device, a plurality of sludge cyclone pipes are arranged in the dense sludge separation device, and a sludge inlet, a light sludge outlet and a dense sludge outlet are formed in the dense sludge separation device; the strain sludge loading device is provided with an inlet and an outlet, and the inlet is respectively connected with a strain outlet and a compact sludge outlet of the exclusive strain in-situ production device through a strain conveying pipeline and a compact sludge conveying pipeline; and the system is arranged between sludge return pipes of the sedimentation tank and the biochemical tank. According to the invention, continuous propagation supply is carried out on domesticated specific exclusive strains, full agglomeration and mixing of the domesticated specific exclusive strains and dense sludge subjected to cyclone separation are ensured, the survival rate of the strains is ensured, and the degradation efficiency of pollutants is enhanced. Meanwhile, the improvement of sludge granularity and the enhancement of activity are promoted, the biological stability of microorganisms in a biochemical pool is enhanced, a mutualistic symbiotic virtuous cycle is formed, and the wastewater treatment efficiency is improved.

The invention relates to a single-crystal hollow ZSM-5 molecular sieve and a preparation method and application thereof, the single-crystal hollow ZSM-5 molecular sieve has a double-layer closed hollow structure and a regular hexagonal morphology, the average grain size is 1.0-3.0 [mu] m, and the whole particle is a single-crystal structure. The synthesis method comprises the following steps: synthesizing a seed crystal solution; the preparation method comprises the following steps: dissolving a silicon source in alkali liquor, then mixing with an aluminum source solution to form a mixed solution with specific composition, adding the seed crystal solution, crystallizing, carrying out alkali treatment, and carrying out post-treatment. The molecular sieve has higher low-carbon olefin yield and higher propylene / ethylene ratio in hydrocarbon catalytic cracking reaction. The preparation method is simple, does not need to adopt a large amount of organic template agents, and is good in technical economy.

This invention discloses a high-conductivity emulsion-type intelligent fracturing fluid for oil and gas field enhancement and its preparation method. This fracturing fluid aims to solve the technical problem of the contradiction between the proppant-carrying capacity and the post-colloidal conductivity of traditional fracturing fluids in deep wells under high temperature and high salinity environments. Its core lies in the introduction of a temperature- and salt-responsive zirconium-silicon hybrid nano-crosslinking agent and biomimetic surface-modified layered silicate nanosheets. In preparation, a water-in-oil base emulsion is first formed, followed by the sequential addition of the two modified compounds. The nano-crosslinking agent is prepared through silanization and polymer grafting processes, enabling intelligent activation and viscosity enhancement under formation conditions. The nanosheets are prepared through montmorillonite exfoliation and biomimetic dopamine coating modification, combining drag reduction and proppant surface modification functions. This fracturing fluid system achieves intelligent response with low friction during pumping, high proppant-carrying capacity in the formation, and the formation of high-conductivity channels after colloidal breakdown, making it particularly suitable for fracturing and stimulation of deep and unconventional reservoirs.

The invention belongs to the technical field of fluorine-containing wastewater treatment, and discloses a fluorine-containing wastewater treatment and reuse method which comprises the following steps: (1) adding chemicals into fluorine-containing wastewater to remove fluorine; (2) carrying out suspended matter removal treatment on the wastewater treated in the step (1) by adopting a roll type ultrafiltration unit; (3) carrying out desalination treatment on the ultrafiltration produced water treated in the step (2) by adopting a primary reverse osmosis unit; (4) carrying out further desalination treatment on the primary reverse osmosis produced water treated in the step (3) by adopting a secondary reverse osmosis unit to obtain secondary reverse osmosis produced water; secondary reverse osmosis produced water is recycled to the chemical water replenishing unit. According to the method disclosed by the invention, the wastewater can be recycled, the discharge of the wastewater is reduced, the advanced treatment and reuse of the wastewater are realized, and the utilization value of the wastewater is improved.

The application discloses a kind of carbon dioxide absorption liquid and its preparation method and application, it is related to gas purification technical field, by weight percentage, including 15wt%~40wt% amine compound, 0.5wt%~5wt% weak acid compound and / or ester compound, 0.5wt%~2wt% antioxidant, the balance is water;Antioxidant is the mixture of iodized metal and amino acid.The antioxidant in the absorption liquid utilizes the non-consumption and stable characteristics of iodized metal, from the source inhibits the possibility of amine molecule oxidant degradation, supplemented with amino acid compatibility to enhance the anti-oxidation effect of absorption liquid at high temperature, and guarantee its removal capacity, with weak acid compound or ester compound, on the one hand, further reduce the corrosive nature of decarburization solution, on the other hand, can have certain regeneration energy-saving effect, therefore the carbon dioxide absorption liquid in the application has good technical economy.