Greenhouse efficiency-increasing system and method integrating biogas purification application

Abstract

The invention discloses a greenhouse efficiency-increasing system and a method integrating biogas purification application. The system includes a purification device, a CH<4> storage tank, a fuel gasboiler, a CO<2> storage tank, a flue gas purification device, a greenhouse, a flue gas condensation heat exchanger, a gas-water separation device, a CO<2> additional fertilization nozzle, a hot waterheat exchanger, a water collection tank, a water storage tank, a biogas lamp and a control system. According to the actual situation of the greenhouse, biogas direct combustion or CH<4> direct combustion is selected to provide heat for the greenhouse. The flue gas generated by combustion is condensed to CO<2> and H<2>O that are be used as additional CO<2> fertilizer for greenhouse and water for crops, and winter snow at top of the greenhouse is thawed by the flue gas condensation heat exchanger to water that is used as water for the crops in the greenhouse. The system and the method achieve zero emmision of CO<2> while providing conditions required for growth of the crops in the greenhouse, and the redundant CH<4> and CO<2> can be sold or used in other industrial productions, thereby achieving three objectives of greenhouse efficiency increase, emission reduction and income increase.

Description

technical field [0001] The invention belongs to the fields of energy efficiency utilization, greenhouse efficiency enhancement technology and environmental protection, and specifically relates to a greenhouse efficiency enhancement system and method for integrated biogas purification application. Background technique [0002] During crop growth, CO in the greenhouse 2 Concentration, temperature, water and light are important factors affecting crop yield and quality, so do a good job of CO2 in the greenhouse 2 The source supply and timely regulation of concentration, temperature, water and light are very necessary. [0003] Currently used CO 2 The methods of gas fertilizer application mainly include CO 2 The steel cylinder method, gas fertilizer hanging bag method, organic composting method, etc. 2 There are disadvantages such as high supply cost and difficult to control the amount of release, and the use of coal burning and chemical reaction methods will bring about seco...

AI Technical Summary

Problems solved by technology

[0006] At present, the warming system used in the greenhouse has a certain lag in response to weather changes, resulting in large fluctuations in the temperature inside the greenhouse when the outside temperature changes greatly, which is not conducive to the growth of greenhouse crops.

[0007] In the cold winter, too much snow on the top of the greenhouse will lead to the collapse of the greenhouse, and it will also affect the sunlight of the greenhouse crops

Snow removal methods currently used include manual snow removal, mechanical snow removal, high-pressure flushing snow removal, and snow-melting agent snow removal method. Manual snow removal consumes manpower and cannot be removed in time in bad weather. When the temperature is low, it is easy to freeze, and the deicing agent used in deicing will pollute the environment to a certain extent.

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