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Method and system for providing carbon dioxide and heat for greenhouse

A carbon dioxide and greenhouse technology, applied in botany equipment and methods, greenhouse cultivation, climate change adaptation, etc., to achieve the effects of reducing pollution, reducing emissions, and improving energy utilization efficiency

Inactive Publication Date: 2011-08-24
WUHAN KAIDI ENG TECH RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the process of land consolidation and rural urbanization, large-scale greenhouses will enter a period of rapid growth, and the existing carbon dioxide gas fertilizer application technology cannot meet the requirements of large-scale and intelligent control

Method used

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  • Method and system for providing carbon dioxide and heat for greenhouse
  • Method and system for providing carbon dioxide and heat for greenhouse

Examples

Experimental program
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Effect test

example 1

[0043] A stainless steel pipe (caliber 12×1 / 2) is used to connect the flue of a 1-ton biomass boiler, and the flue gas is introduced into the gas treatment laboratory. Use water tank to wash, remove impurities and exchange heat. The concentration of carbon dioxide in the treated gas is 14% to 20%, and then the gas is transported to 100m through the pipeline 2 Cucumbers are planted in greenhouses, and the temperature in the greenhouses is controlled at 26°C to 28°C during the day and 14°C to 16°C at night; a carbon dioxide concentration meter is placed in the shed, and carbon dioxide gas is released into the shed at 9:00 every morning (stop on cloudy and rainy days). Apply), so that the carbon dioxide concentration in the shed rises to 600ppm, and it is properly ventilated after being closed for two hours; as the melon seedlings grow, the concentration of gas fertilizer application gradually increases, and the concentration in the shed reaches 1000ppm every day during the flowe...

example 2

[0045] The pipe connection and gas treatment methods are the same as in Example 1. Phalaenopsis is planted in a glass greenhouse, and the circulating water is controlled so that the temperature in the greenhouse during the day is 20°C to 25°C, and the temperature at night is 14°C to 16°C; a carbon dioxide concentration meter is placed in the greenhouse , adding carbon dioxide gas fertilizer to the shed every day, the time and method of application are the same as the above method, and the number of flower buds in the final statistics is increased by 31.2% on average per unit area compared with the control greenhouse.

example 3

[0047] Use stainless steel pipes (caliber 12×1 / 2) to connect the flue of a 1-ton biomass boiler, then spray and wash the flue gas for impurity removal and heat exchange, and then increase the temperature of the connected gas Press the pump to pressurize the gas to 0.2MPa ~ 0.3MPa, and then transport it to 100m through the pipeline 2 In the glass greenhouse, gas control valves and gas flow meters are installed on the pipelines outside the shed, and gas nozzles are installed on the pipelines inside the shed; the water after heat exchange is passed into the greenhouse and the radiator is used to supply heat to the greenhouse, and the daytime temperature in the greenhouse is controlled at 24 ℃~28℃, and the temperature at night is 14℃~16℃. When celery is planted in the shed, the final yield increases by 39.3% compared with the control.

[0048] The method and system of the present invention, through processes such as impurity removal and heat exchange, and then through an intellige...

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PUM

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Abstract

The invention relates to a method for providing carbon dioxide and heat for a greenhouse, comprising the following steps of: conveying flue gas of a power plant to a flue gas treatment region by virtue of a pipeline; washing the conveyed flue gas to remove impurities, and carrying out heat exchange between the flue gas and water; boosting the gas washed by water by virtue of a gas booster pump; conveying the boosted gas to the greenhouse by virtue of the pipeline, and providing the gas containing carbon dioxide for the greenhouse by virtue of a sprayer on the pipeline in the greenhouse; and introducing the water after the flue gas is washed into the greenhouse to supply heat by virtue of the pipeline. In the method and system for providing the carbon dioxide and heat for the greenhouse provided by the invention, the flue gas of a biomass power plant is adopted as a raw material, the flue gas is subjected to washing, decontamination and heat exchange and then is conveyed to the greenhouse to provide the carbon dioxide and heat for the greenhouse, thus energy utilization ratio is improved, application of coal and pollution caused by the coal are reduced, and emission of greenhouse gas is reduced.

Description

【Technical field】 [0001] The invention relates to the field of power plant flue gas recovery and utilization, in particular to a method and system for supplying heat and carbon dioxide to greenhouses. 【Background technique】 [0002] my country's continental climate has obvious characteristics, with cold winters and scarce precipitation, and the temperature in winter is 5-20 degrees lower than that of regions at the same latitude in the world. From January to the northeast and northwest, the winter can reach more than half a year. [0003] In order to ensure the supply of winter vegetables, greenhouses are very common in China. Many of these greenhouses use coal as fuel, with extensive combustion and low thermal efficiency, which not only pollutes the environment, causes waste of energy, but also often causes unfortunate events such as gas poisoning. Other greenhouses use oil-fired boilers to provide heat. Due to rising oil prices, such greenhouses can usually only grow exp...

Claims

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Application Information

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IPC IPC(8): A01G9/24A01G9/18
CPCY02A40/25
Inventor 陈义龙张岩丰李江川俞建中胡书传
Owner WUHAN KAIDI ENG TECH RES INST CO LTD