Intelligent pig farm capable of realizing combined heat and power supply by utilizing pig manure

Abstract

The invention relates to the technical field of cultivation and comprehensive utilization of resources, and particularly relates to an intelligent pig farm capable of realizing combined heat and powersupply by utilizing pig manure. The intelligent pig farm comprises a pig house; a plurality of pigsties are arranged in the pig house at intervals; each pigsty is internally provided with a manure and sewage collection tank; a sewage pipeline is laid under the ground of the pig house; the water outlet of each manure and sewage collection tank and the sewage pipeline communicate with the pig house; a heating device, a cooling device, a flushing device, a ventilation device and a lighting device are arranged in the pig house; and a manure regulation tank, a sewage sedimentation tank, a first biogas fermentation tank, a second biogas fermentation tank, a methane extraction device, a methanol solution synthesis device, a biogas and biogas residue treatment device, a reformer of hydrogen production by using methanol water, a fuel cell and a control device are respectively arranged outside the pig house. According to the invention, heat energy and electric energy are generated through the conversion of pig cultivation wastes, and the intelligent control of biomass, heat and electricity is realized, so that the biomass energy source is effectively converted and comprehensively utilized.

Description

technical field [0001] The invention relates to the technical field of breeding and comprehensive utilization of resources, in particular to an intelligent pig farm that utilizes pig manure to realize cogeneration of heat and power on site. Background technique [0002] Environmental pollution and energy shortage are two major themes worldwide, and it is imminent to develop technologies for green environmental governance and renewable energy production. According to statistics, my country's large-scale livestock and poultry farming produces about 3.8 billion tons of livestock and poultry farming waste (feces) every year. If it is completely converted into biogas, it is equivalent to 162 million tons of standard coal, and only about 15% of which are equipped with biogas projects. Handling equipment. Livestock and poultry manure has become one of the main sources of agricultural non-point source pollution. A large amount of livestock and poultry manure has been discharged with...

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Problems solved by technology

However, the main problems in the existing method for treating manure in pig farms are: (1) the manure of livestock and poultry is not fully utilized and transformed well, the treatment method of manure of livestock and poultry is single, there is no comprehensive treatment, and the treatment efficiency is low, and The equipment occupies a large area and the cost of operation and maintenance is high, which affects large-scale promotion and use; (2) At present, pig farms mainly rely on high-voltage centralized power generation from external power stations for heating, cooling, lighting, washing and communication equipment for breeding Power supply, unable to supply power to remote areas with inconvenient transportation, thus limiting the choice of breeding sites, and the breeding farms mainly rely on manual operations, with low intelligence, resulting in low breeding efficiency and high control costs, which is not conducive to the scale and development of rural farming. Industrialization development; (3) The existing treatment of livestock and poultry waste, biogas fermentation, and utilization of biogas for power generation or combustion for heat are separated from each other. Transportation to power plants or farmers for combustion, low resource utilization and conversion efficiency, especially the following problems in the storage, transportation and effective use of biogas: On the one hand, biogas contains toxic gases such as hydrogen sulfide and carbon monoxide, and also contains various miscellaneous gases, Odor, easy to burn and explode; on the other hand, people currently use biogas mainly to obtain energy by directly burning it, such as using biogas for cooking, heating, lighting, etc. The energy utilization rate of this method is low In addition, the existing technology also uses biogas to generate electricity, but the existing biogas power generation system uses biogas combustion to generate thermal energy, that is, first converts thermal energy into mechanical energy, and then converts mechanical energy into electrical energy, and the secondary conversion efficiency is too low , so it has not been widely used

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