Biological carbon fixation flue gas purification system and method thereof

Abstract

The invention discloses a biological carbon fixation flue gas purification system. The system comprises a flue gas sulfur and nitrogen fixation treatment part and a microalga cultivation part; the flue gas sulfur and nitrogen fixation treatment part comprises a deduster, a first induced draft fan, a prewashing bubble tower, a second induced draft fan, a fine washing bubble tower and an ionized water maker; and the microalga cultivation part includes a flue gas heat exchanger, a microalga photoreactor, a water ultrafiltering and softening device, a low temperature vacuum evaporator, an alga water concentrating device and an alga powder drying device. Ionized water rich in hydroxide radicals is generated, micro-nano bubbles have a cavitation characteristic and a super oxidation effect, and air purification is carried out two times to achieve the best purification effect; and the micro-alga cultivation system is combined with a boiler exhaust gas discharge part, so boiler discharge can beachieved without a chimney, wastes can be changed into valuables, and incomes can be brought for enterprises while achieving environmental protection.

Description

technical field [0001] The invention relates to the technical field of flue gas purification treatment, in particular to a biological carbon fixation flue gas purification system and method thereof. Background technique [0002] At present, the traditional desulfurization and denitrification methods are still mainly used in domestic air pollution control technology. [0003] The current mainstream desulfurization technology is the limestone-gypsum method. In the desulfurization of the stone method, a large amount of gypsum by-products are produced. In the early days, gypsum can be used in large quantities as building materials. However, the current demand for building materials has greatly reduced the use of gypsum boards, resulting in gypsum However, the domestic stone desulfurization method still accounts for the vast majority. The amount of gypsum formed plus the amount of gypsum mined is far greater than the market demand. The new investment and energy consumption are re...

AI Technical Summary

Problems solved by technology

[0009] To sum up, in the current mainstream desulfurization and denitrification technologies, there are still common coping methods, which are targeted removal in response to national emission requirements, while ignoring the secondary pollution problem

Other non-mainstream methods are not adopted due to high construction and operating costs

[0010] In terms of specific public conditions, due to the characteristics of air pollution, it is difficult for monitoring instruments to measure accurately, and the operating cost of truly treating waste gas to meet the emission standards is too high. Furthermore, the country's air pollution requirements are becoming stricter every year. , resulting in a very heavy investment burden for enterprises in air pollution control, forming some speculative business owners who have an unhealthy attitude towards air pollution control and room for illegal operations

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