Penaeus vannamei cultivation system of biomass combined heat and power production

Abstract

The invention relates to the technical fields of cultivation and comprehensive utilization of resources, and particularly relates to a penaeus vannamei cultivation system of biomass combined heat andpower production. The cultivation system comprises a prawn cultivation greenhouse, a cultivation wastewater thermal power station arranged around the prawn cultivation greenhouse, a biogas slurry andbiogas residue treatment device and a cultivation water treatment device. An illumination device, a temperature regulating machine and a plurality of groups of cultivation units are arranged in the prawn cultivation greenhouse; the cultivation wastewater thermal power station comprises a control device, a cultivation wastewater buffer tank, a methane fermentation tank, a methane extraction devicefor separating methane from biogas, a methanol synthesis device for synthesizing methanol by using methane, a reformer of hydrogen production by using methanol water, and a fuel cell, wherein the cultivation wastewater buffer tank, the methane fermentation tank, the methane extraction device, the methanol synthesis device, the reformer and the fuel cell are sequentially connected. The reformer ofhydrogen production by using methanol water is provided with an electric heater for providing the temperature required for a hydrogen production reaction of reforming the methanol water. According tothe cultivation wastewater thermal power station provided by the invention, high-efficiency conversion of heat energy and electric energy can be locally realized by utilizing the cultivation wastewater, and heat and power are supplied to the system itself, so that biomass combined heat and power production and comprehensive utilization of energy sources can be realized.

Description

technical field [0001] The invention relates to the technical field of breeding and comprehensive utilization of resources, in particular to a culture system of Penaeus vannamei for combined heat and power generation of biomass. Background technique [0002] Penaeus vannamei is one of the three excellent varieties with the highest aquaculture output in the world. It has the characteristics of strong adaptability, fast growth and strong disease resistance. However, Penaeus vannamei is a warm-water animal and is only suitable for survival at a temperature of about 20 degrees Celsius. Therefore, it has become the main shrimp farming species in Guangdong, Guangxi and Hainan in my country. A large amount of aquaculture wastewater is produced in the process of aquaculture, which contains various nitrogen, phosphorus and other organic suspended matter, excrement, etc., which has adverse effects on the aquaculture and water environment. The existing solutions are mainly to change wa...

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Problems solved by technology

However, water change is to directly discharge part of the aquaculture wastewater and then replenish some fresh clean water to improve the physical, chemical and biological conditions of the water body, but the discharged wastewater causes environmental pollution, and the amount of clean water is large; regular addition of chemical oxidants The disadvantage is that it destroys the ecological balance of the aquaculture water while oxidizing and detoxifying, and the operating cost is high; the disadvantage of regular dosing of probiotics is that it is easy to cause large fluctuations in the physical, chemical and biological indicators of the water body, and the operating cost is high; The equipment cost of industrial water purification treatment method is high, and the operation cost is high

The main reasons for the ecological system compensation method are problems such as large land occupation and difficult operation and management, which affect its application to a certain extent.

Therefore, the treatment efficiency of these existing aquaculture wastewater is low, the cost is high, and there is a lack of comprehensive treatment

On the other hand, the cultivation of Penaeus vannamei has high requirements on temperature and light conditions. At present, it mainly relies on external power stations for power supply. However, this existing high-voltage centralized power generation is difficult to supply power to remote areas with inconvenient transportation, thus limiting the use of breeding sites. choose

In addition, there is also a method of using biogas to generate electricity in the prior art, 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. The secondary conversion efficiency Too low to be widely used

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