Decarbonization smoke preprocessing system integrated with gas desulfurization system

Abstract

A decarbonization smoke preprocessing system integrated with a gas desulfurization system comprises a smoke cooling washing tower. The top of the smoke cooling washing tower is communicated with a smoke separator, a draught fan is arranged at the top of the smoke separator, the bottom of the smoke separator is communicated with a buffer tank, the bottom of the smoke cooling washing tower is communicated with the upper portion of a cooling water tower through a cooling water return pump, the cooling water tower is communicated with the buffer tank, one side of the buffer tank is communicated with the upper portion of the smoke cooling washing tower through a smoke cooling water feeding pump, and the other side of the buffer tank is communicated with a desulfurizing tower through a washing water pump. The decarbonization smoke preprocessing system utilizes circulation washing liquid as compensation water of a desulfurizing system and washing water of demister. Acid material enrichment density can be effectively reduced, system corrosion is reduced, and the shortcoming that the cooling water tower is poor in cooling performance in high-temperature severe environment in summer can be compensated to some extent by replacement of the circulation washing liquid. Further, a matched waste water processing system is not needed to be arranged, the process is simplified, and finally water consumption of the whole system is reduced.

Description

technical field [0001] The invention relates to the technical field of flue gas purification, in particular to a decarbonization flue gas pretreatment system integrated with a desulfurization system. Background technique [0002] Today's China is still an economy dominated by fossil fuels such as coal, oil and natural gas. This typical carbon-based energy economy makes the "high-carbon" characteristics of my country's economy and energy structure very prominent. CO 2 The emission intensity is relatively high, and the situation of energy conservation and emission reduction is very severe. [0003] 80% of my country's carbon dioxide emissions come from coal combustion, and more than 50% of coal consumption is used for thermal power generation. The grim reality makes people have to seriously think about the sustainable development of coal power. Power plants have CO 2 Large, concentrated and continuous emissions, CO capture in power plants 2 It is considered to be the most i...

AI Technical Summary

Problems solved by technology

However, the single flue gas pretreatment system has many disadvantages, mainly including: poor cooling performance in summer high temperature environment; due to the enrichment of acidic substances, the anti-corrosion performance of the system is high, and the project investment is large; Advanced wastewater treatment device, complex system, high treatment cost and waste of process water

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