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Our carbon capture technology responds to the needs of owners to capture and recover CO₂from flue gases. The absorption solvent (the core of the wet capture technology)used has a fast absorption rate, a high net CO₂ capture load, and the lowest regeneration energy value in China (the lowest regeneration energy value can be less than 2.0t steam/tCO₂)
In terms of heat utilization within the carbon capture device, the proprietary heat exchanger equipment is designed with a perturbed structure to achieve a very low temperature difference(5~7 k)at the hot end of the heat exchanger, realizing highly efficient heat recovery and utilization. At the same time, the latent heat of regenerated gas is skillfully applied to solve the problem of unutilized latent heat of regenerated gas in the traditional process.
Aiming at the organic amine absorption solvent due to its inherent saturation vapor pressure, aerosol and other issues, resulting in the purified gas out of the tower process willescape loss, this technology takes this into full account, using the optimization of the absorption solvent composition, strength- en the means of gas-liquid separation, and strict control of the process conditions, to greatly reduce the part of the fugitive loss. In addition, the alkali washing tower adopts the design of temperature reduction and impurity removal function, which can greatly reduce the generation of waste liquid after alkali washing and lower the treatment cost.
The carbon capture technology solution adopted by our company fully exploits the absorption solvent system, high-efficiency equipment, extreme energy-saving process, etc., to ensure that it is technically the leading level in China.
● Energy sector: Design of CO₂ mineralization for oil repulsion, fracturing, etc.
● Chemical synthesis: Methanol, acetic acid, olefins, methane, carbonate.
● Industrial applications: Saline wastewater treatment (containing Na, Cr, NO₃), food-grade CO₂ (mature technology), utilization of inert protective gas (stirring bottom blowing, welding), etc.
It is well known that the CO₂ recovery solution for CO₂ sources with low partial pressure (low concentration) of flue gas usually adopts the chemical absorption method, and the core of the chemical absorption capture technology lies in the absorption solvent. The core evaluation criteria for the application of absorption solvent in such units are usually regeneration energy consumption, degradation resistance, and operational losses. When the unit is characterized by low CO₂ content and high O₂ content, it has the following highlights after design:
The requirement of the Absorption Solvent's anti-degradation ability should be the primary consideration, especially when the gas source recovered by the device contains a certain amount of O₂, the anti-degradation ability of the Absorption Solvent should be strictly required(primarily oxidative degradation). Tonexus Technology TX-1 absorption solvent can be customized to solve the problem of oxidative degradation of absorption solvent according to the different needs of devices and products.
Comprehensively evaluates the price of steam in the public works, and considers whether to adopt the energy-saving process of "Interstage Cooling", "MVR"; at the same tme, it is recommended to adopt the patented technology of Tonexus Technology's process, which can make the best use of the internal energy of the system to reduce the overall energy consumption of regeneration without any significant increase in the input.
Absorption Solvent type | Regeneration temperature(℃) | Ne capture capacity L/L | Regeneration energy consumption(GJ/t) | Operating losses(kg/t-CO₂ | Anti-descent capacity/min | |
MEA | 112~118 | 18~24 | 3.9~4.2 | 1.5~2.9 | 13 min | |
Domestic first-class absorption solvent | 106~111 | 24~28 | ~2.8(~2.4) | ~1.0 | / | |
Tonexus TX-1 Series | A | 104~108 | 30~36 | ~2.5(<2.1) | 0.4~0.8 | 4.5h |
B | 104~108 | 24~30 | ~2.7(2.4) | 0.3~0.7 | 7.6h | |
C | 107~112 | 20~25 | ~3.4 | 0.8~1.3 | 20.4h | |
— Comparison of performance between TX-1 and other absorption solvents
Pretreatment tower sub-functional design can significantly reduce 30%-90% waste liquid discharge and desulfurization liquid consumption, and assist the water balance control.
Absorption tower purge gas is subjected to an enhanced gas-liquid separation section to minimize the loss of absorption solvent amine escape.
Regeneration tower top regeneration latent heat utilization process, enhance the system water balance control ability and heat recovery, optimize the regeneration tower temperature distribution.
Non-system heat source medium subjected to MVR design.
The use of TX-1 series absorption solvents features extremely strong anti-oxidative degradation capability, which is an exclusive technology in the industry. In long-term continuous operation of engineering instalations, the color of the absorption solvent remains almost unchanged, with stable capture performance and stable CO₂ output, it can be recirculated.
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