من به دنبال

The pyridine production technology based on catalytic materials involves the synthesis of pyridine and its methylpyridine derivatives from aldehydes and ammonia under the action of specialized catalysts. The catalysts are the core of the process, and their activity, selectivity, and lifetime directly determine the product distribution and operational economics. The supporting process covers aspects such as raw material composition, reaction temperature and pressure control, product distillation separation, and catalyst regeneration. Pyridine derivatives are important intermediates for the synthesis of pharmaceuticals, pesticides, and veterinary drugs. This technology has been industrialized and has a mature basis for industrial application, making it suitable for fine chemical enterprises with access to aldehyde raw materials to build or modify pyridine units. Services such as catalyst supply and selection, reaction process licensing, catalyst loading and regeneration guidance, distillation system configuration recommendations, commissioning guidance, and operation training are available.

The water washing-distillation technology for ammonia-containing waste gas recovery: After the ammonia-containing waste gas is filtered and pre-cooled, it enters a multi-stage countercurrent water absorption system to obtain 18% to 22% concentrated ammonia water; the ammonia water is sent to the distillation tower for heating and absorption, and the high-purity ammonia gas at the top of the tower is compressed and condensed to produce industrial liquid ammonia products; the absorption water is recycled, and the deammonization exhaust gas is treated with water after purification to meet emission standards. This technology combines waste gas treatment with product recovery, solving the ammonia emission problem and producing marketable liquid ammonia or ammonia water products, which is suitable for the treatment of ammonia-containing exhaust gas from coking, synthetic ammonia, urea, and nitric acid plants. The technology has been implemented in engineering applications and has a mature industrial operation base. It can provide services such as process package design, support for the design of the absorption and distillation tower system, recommendations for the selection of ammonia compression and liquefaction system equipment, ammonia safety protection schemes, driving guidance, and operation training.

Dry flue gas desulfurization technology without water consumption and waste water discharge: using quicklime or limestone dry powder as desulfurization agent, directly injected into the flue gas pipeline or a dedicated reactor, the gas-solid two-phase contact completes the adsorption and neutralization reaction of sulfur dioxide, forming solid desulfurization ash, which can be collected by the dust removal system for integrated disposal or utilization. Compared with wet desulfurization, this technology is simple, occupies a small area, has no white smoke and waste water problems, and is particularly suitable for flue gas treatment in areas with water shortages, small and medium-sized boilers, and industrial furnaces. It can also be used as a pre-desulfurization unit before wet desulfurization. This technology has been industrialized and has a mature basis for operation. We can provide services such as process design, desulfurization agent preparation and spray system selection, reactor and dust removal system matching design, desulfurization ash disposal scheme consulting, driving guidance, and operation training to help owners meet emission standards with lower investment.

The pressure swing adsorption (PSA) technology for purification and recovery of medium and high concentration carbon dioxide gas sources is based on solid adsorbents such as molecular sieves and activated carbon. It selectively adsorbs CO2 under high pressure, and is regenerated by decompression or heating, resulting in high-purity CO2 products. The device has no chemical solvent consumption, high automation, and flexible start-up and shutdown, making it particularly suitable for processing high-concentration CO2 sources such as chemical exhaust gas, lime kiln gas, and fermentation gas. The recovered CO2 can be used for food-grade applications, welding protection gas, or further chemical utilization. This technology has been implemented in industrial applications and has a mature basis for industrial operation. Services include design of adsorption packages, selection and filling of adsorbents, recommendations for programmable valves and control systems, design of product gas purification systems, and driving instructions and operation training.

Chemical absorption technology for CO2 capture from high-volume, low-concentration flue gas: flue gas and amine absorption fluid are contacted in an inverse flow in the absorption tower, CO2 is selectively absorbed, the enriched liquid is regenerated by heating and desorption, and high-purity CO2 product gas is obtained. This technology is highly adaptable to low-pressure CO2 and has a large processing capacity, making it the mainstream choice for CCUS projects in coal-fired power plants, steel, cement, and chemical industries. The captured CO2 can be used for oil recovery, geological sequestration, or further processing into chemical products. The technology has been industrialized and has a mature basis for operation. The owner needs to evaluate the conditions for the integration of steam and electricity utilities. Services such as process package design, amine system selection, support for absorption and regeneration tower system design, energy efficiency optimization, CO2 compression and purification system design, commissioning guidance, and operation training can be provided.

The technology for the synthesis of isothiazolinone-type disinfectants (CITs) for industrial water treatment and corrosion prevention is oriented toward the industrial field. The products are produced through processes such as sulfurization, chlorination, and neutralization. These products are characterized by broad-spectrum, high efficiency, and low dosage. They are widely used in the control of microorganisms in fields such as circulating cooling water, paper making, coatings, and daily chemicals. The focus of the process design is on controlling the temperature and feed ratio of the sulfurization and chlorination processes, as well as the safe treatment of chlorine-containing waste gas. The technology has been implemented in industrial applications and has a mature basis for industrial operation, making it suitable for water treatment chemical enterprises in fine chemical parks or chemical enterprises planning to enter the disinfectant market. The owner must have safe supply and storage conditions for chlorine gas or chlorination reagents. Services such as process package authorization, reaction system basic design support, waste gas treatment solutions, product formulation application consulting, driving guidance, and operation training are available.

The classic production route for chlorine-free potassium sulfate is the Mannheim process: potassium chloride and sulfuric acid are reacted at high temperature in a Mannheim furnace to produce potassium sulfate, with the by-product hydrogen chloride being absorbed to produce hydrochloric acid for external sales. The product is a chlorine-free potassium fertilizer, suitable for tobacco, fruit trees, vegetables, and other crops that are sensitive to chlorine. It has a higher market value than ordinary potassium chloride fertilizer. This process is suitable for owners with potassium chloride resources (such as salt lake potassium fertilizer enterprises) or near sulfuric acid supply sources, and it is also suitable for fertilizer enterprises to enrich their high-end potassium fertilizer product lines. This technology has been implemented in industrial applications and has a mature industrial operation foundation. Services such as process package authorization, Mannheim furnace system basic design support, acid-resistant material and equipment selection recommendations, by-product hydrochloric acid absorption solutions, driving guidance, and operation training are available.

With hydrogen fluoride and tetrachloroethylene as raw materials, the technology produces hydrofluorocarbon (R125) and related supporting processes for fluorinated refrigerants, and can extend the layout to include methane (R32). The reaction system uses fluorination catalysts, and supports the processes of hydrogen fluoride separation, product distillation purification, and waste gas treatment, ensuring product purity that meets the requirements for refrigerants. Both R125 and R32 are the current mainstream low-GWP alternative refrigerant components, widely used in the mixing of refrigerant media for household air conditioners and commercial refrigeration equipment. The technology has been implemented in industrial applications, with a mature basis for industrial operation, and is suitable for fluorine chemical enterprises with resources for fluorite-hydrofluoric acid-chloride. Services include process package authorization, fluorination reaction system base design support, catalyst selection recommendations, distillation and waste gas treatment schemes, start-up guidance, and operation training.

The source technology of the nitrogen fertilizer and chemical raw materials industry chain is the ammonia synthesis production process. The coal head route is to gasify raw coal to produce crude gas, and after transformation, carbon removal, and sulfur removal purification, qualified hydrogen-nitrogen gas is obtained; the gas head route is to convert natural gas into syngas, with a shorter process and relatively low carbon emissions. After purification, the nitrogen-hydrogen mixture gas is compressed and synthesized into ammonia under high temperature and pressure using an iron-based catalyst, and the liquid ammonia is separated and recycled to the system. Both routes have been implemented in engineering applications and have a mature industrial operation base, which can be selected according to the coal or natural gas resources available at the site of the owner. The product liquid ammonia can be further processed into urea, ammonium nitrate, or sold directly as a chemical raw material. Services such as feed route selection, plant-wide process package design, key equipment selection for gasification and synthesis systems, catalyst selection, start-up guidance, and operation training are available.