WO2024016858A1

WO2024016858A1 - Symbiotic agricultural/photovoltaic/gas system based on drought stress scenario

Info

Publication number: WO2024016858A1
Application number: PCT/CN2023/098046
Authority: WO
Inventors: 余汉华; 鲁国文; 吕云青; 韩冬
Original assignee: 上海能源建设工程设计研究有限公司
Priority date: 2022-07-22
Filing date: 2023-06-02
Publication date: 2024-01-25
Also published as: CN115067175A

Abstract

Disclosed is a symbiotic agricultural/photovoltaic/gas system based on a drought stress scenario. The system comprises: compound soil, a photovoltaic system, a siphon cleaning drip irrigation system, a hydrogen production system, and a hydrogen mixing pipeline. The compound soil is disposed below the photovoltaic system, the compound soil is configured for planting understory crops, the siphon cleaning drip irrigation system is configured to sprinkle moisture toward the photovoltaic system, the compound soil receives the moisture, the photovoltaic system provides electrical energy to the hydrogen production system, the hydrogen production system is configured to produce hydrogen gas, and the hydrogen mixing pipeline is connected to the hydrogen production system. The symbiotic agricultural/photovoltaic/gas system based on a drought stress scenario provided by the present invention achieves soil improvement of desert land resources, solves the problem of energy delivery, and facilitates the consumption of solar energy converted in desert areas.

Description

An agro-photon symbiosis system based on drought stress scenarios

Technical field

The invention relates to the technical field of comprehensive energy application, and in particular to an agro-phosgene symbiosis system based on drought stress scenarios.

Background technique

In the context of energy transformation, the northwest desert, Gobi desert, and deserts with land area advantages provide abundant light energy and have gradually become a hot spot for the development of wind and solar resources. Although the desert area is rich in land area, it is not suitable for growing crops due to soil composition, climate and other conditions. This limits the development and utilization of scenery resources and makes it impossible to achieve comprehensive utilization of resources. In addition, desert areas have limited industries and limited demand for electric energy, and cannot absorb the electric energy converted through wind and solar resources. Limited by local consumption capacity and limited power delivery channels, how to develop new delivery routes and achieve comprehensive utilization of land are the main problems currently faced.

Therefore, those skilled in the art are committed to providing an agro-photon symbiosis system based on drought stress scenarios, using land resources in the desert environment to improve the soil environment, making it suitable for plant growth, and realizing plant drip irrigation through the cleaning water of the photovoltaic system , meet the requirements of photovoltaic operation and maintenance, and provide the water and nutrients needed for plant growth, combined with photovoltaic hydrogen production and the development of hydrogen mixing ratio for in-service natural gas pipelines, to solve the problem of energy transmission.

Contents of the invention

In view of the shortcomings of the existing technology, the technical problem to be solved by the present invention is how to provide an agro-phosgene symbiosis system suitable for drought stress scenarios.

The agro-photovoltaic symbiosis system based on drought stress scenarios provided by the present invention includes compound soil, a photovoltaic system, a siphon cleaning drip irrigation system, a hydrogen production system, and a hydrogen mixing pipeline. The compound soil is located below the photovoltaic system, so The compound soil is configured to plant understory crops, the siphon cleaning drip irrigation system is configured to drip water to the photovoltaic system, the compound soil receives the water, and the photovoltaic system supplies water to the hydrogen production system. Electric energy is provided, the hydrogen production system is configured to produce hydrogen gas, and the hydrogen mixing pipeline is connected to the hydrogen production system.

Preferably, the compound soil is made of red mud and sandy soil in a ratio of 1:9.

Preferably, the compound soil is a soil aggregate formed from red mud and sandy soil through dry and wet cycles and pressurized stirring.

Further, the photovoltaic system consists of fixed cement pouring piles, high brackets, frameless photovoltaic modules, and cathodic protection grounding connections.

Further, the siphon cleaning drip irrigation system includes a storage tank, a main water inlet pipe, an auxiliary water inlet pipe, and an outlet pipe. One end of the main water inlet pipe and the auxiliary water inlet pipe are respectively placed in the storage tank, and the main water inlet pipe is placed in the storage tank. The water pipe and the other end of the auxiliary water inlet pipe are respectively connected to the water outlet pipe through an overflow tee. The main water inlet pipe is provided with a first pneumatic valve and a limit switch, and the auxiliary water inlet pipe is provided with a float ball. The water outlet pipe is provided with a second pneumatic valve.

Further, the siphon cleaning drip irrigation system also includes a water storage tower, and the water storage tower is connected to the water storage tank through a conductive cascade water diversion conduit.

Further, the water in the siphon cleaning drip irrigation system is compound water with silicon-resistant organic cementitious substances added.

Further, the hydrogen production system includes a demineralized water storage tank, an electrolyzer, a drying tank, a hydrogen buffer tank, a compressor, a hydrogen replenishing device, and a hydrogen storage bottle group connected in sequence. The electrolytic tank, drying tank, compressor It is also connected to a cooling device, and the electrolytic tank and drying tank are also connected to a nitrogen storage bottle group.

Further, the electrolytic tank, drying tank, hydrogen buffer tank, compressor, hydrogen replenishing device, and hydrogen storage bottle group are connected with a flame arrester, and the demineralized water storage tank, electrolytic tank, drying tank, and hydrogen buffer tank are equipped with Drain pipe.

Further, the hydrogen mixing pipe is a 316 stainless steel pipe with a nickel content greater than 12%.

The present invention has at least the following beneficial technical effects:

Through the combination of compound soil, photovoltaic system, siphon cleaning drip irrigation system, hydrogen production system and hydrogen mixing pipeline, the present invention realizes an agro-photogas symbiosis system in drought stress scenarios, realizes soil improvement of desert land resources, and can be suitable for Plants grow, and the clean water from the photovoltaic system is used to irrigate the plants. The solar energy converted by the photovoltaic system is used for photovoltaic hydrogen production and the hydrogen mixing ratio of the hydrogen mixing pipeline, which solves the problem of energy transmission and realizes the use of solar energy in desert areas. Conversion absorption.

The concept, specific structure and technical effects of the present invention will be further described below in conjunction with the accompanying drawings to fully understand the purpose, features and effects of the present invention.

Description of drawings

Figure 1 is an overall schematic diagram of the agro-phosgene symbiosis system provided by the embodiment of the present invention;

Figure 2 is a schematic flow diagram of a siphon cleaning drip irrigation system provided by an embodiment of the present invention;

Figure 3 is a schematic flow diagram of a hydrogen production system provided by an embodiment of the present invention.

Implementation

The following describes multiple preferred embodiments of the present invention with reference to the accompanying drawings to make the technical content clearer and easier to understand. The present invention can be embodied in many different forms of embodiments, and the protection scope of the present invention is not limited to the embodiments mentioned herein.

In the drawings, components with the same structure are denoted by the same numerals, and components with similar structures or functions are denoted by similar numerals. The size and thickness of each component shown in the drawings are arbitrarily shown, and the present invention does not limit the size and thickness of each component. In order to make the illustrations clearer, the thickness of components is exaggerated in some places in the drawings.

The present invention provides an agro-phosgene symbiosis system based on a drought stress scenario. As shown in Figure 1, the agro-phosgene symbiosis system of the present invention consists of a compound soil 1, a photovoltaic system 2, a siphon cleaning drip irrigation system 3, and a hydrogen production system. 4. It consists of 5 hydrogen mixing pipelines. The photovoltaic system 2 receives solar energy and is used for solar power generation. The water stored in the siphon cleaning drip irrigation system 3 is used to clean the photovoltaic system 2. The compound soil 1 is located under the photovoltaic system 2 and is used for planting forests. Under the crops 7, the water cleaned by the photovoltaic system 2 drips into the compound soil 1 to realize the irrigation of the understory crops 7. The hydrogen production system 4 is used to produce hydrogen, and the electricity converted by the photovoltaic system 2 is used by the hydrogen production system 4 Energy input is provided, and the hydrogen produced by the hydrogen production system 4 is output through the hydrogen mixing pipeline 5 . The agro-photovoltaic symbiosis system based on the drought stress scenario provided by the present invention realizes the soil improvement of desert land resources, can be suitable for plant growth, and uses the cleaning water of the photovoltaic system 2 to realize the irrigation of the plants, and the photovoltaic system 2 transforms The solar energy is also used for photovoltaic hydrogen production and the hydrogen mixing ratio of the hydrogen mixing pipeline 5, which solves the problem of energy transmission.

The compound soil 1 of this embodiment is made of red mud and sandy soil mixed in a ratio of 1:9, and is formed into soil aggregates through three dry and wet cycles combined with pressurized stirring at 250 r/min, where The quantitative physical indicators of the ratio of red mud and sandy soil are composed of bulk density, fractal dimension, porosity, moisture content, water retention and water stability macroaggregates, and the quantitative chemical indicators are composed of organic matter content, electrical conductivity, pH value, available phosphorus , hydrolyzable nitrogen and available potassium. The understory crops 7 planted on the compound soil 1 are mainly alfalfa, shallots, potatoes and other crops.

Photovoltaic system 2 is composed of fixed cement cast piles, high brackets, frameless photovoltaic modules and cathodic protection grounding materials. The structure composed of fixed cement cast piles and high brackets ensures that the height of the photovoltaic modules from the ground is not less than 1.8m to facilitate Growth of understory crops 7.

In this embodiment, the siphon cleaning drip irrigation system 3 uses the siphon principle to realize endogenous circulation of fluid potential energy. The process of the siphon cleaning drip irrigation system 3 is shown in Figure 2. When the siphon cleaning drip irrigation system 3 is pre-started, the second pneumatic valve b1 is opened, the first pneumatic valve b5 is closed, and the third pneumatic valve b4 is opened; when the siphon cleaning drip irrigation system 3 is pre-started, the water storage tank b10 stores water and pumps it in from the guide port After filling with water, close the third pneumatic valve b4 and the second pneumatic valve b1; the water outlet pipe b2 works, the auxiliary water inlet b9 works in conjunction under the pressure difference, and the water level of the storage tank b10 drops; after the limit switch b7 acts, the pipe filling water is unbalanced Until the pipe is flush with the water level of the water tank b10. When the siphon cleaning drip irrigation system 3 is started, the first pneumatic valve b5 on the main water inlet pipe b6 is started, and the cascade water diversion conduit a9 and the water storage tower a11 are opened to divert water to the storage tank b10, so that the water level of the storage tank b10 reaches the overflow tee b3 port And the air in the pipe is evacuated, and the siphon system officially works. The water replenishment of the conduction cascade water diversion pipe a9 and the water storage tower a11 is completed, the limit switch b7 is activated, and the pipeline water flows backward until the float b8 of the auxiliary water inlet pipe b9 intercepts the water. The main water inlet pipe b6 stops working when water inflows, and the outlet pipe b2 is drained, waiting for the storage tank. The water level of b10 is balanced with the main water inlet pipe b6, and the float b8 of the auxiliary water inlet pipe b9 rises to the water level balance of the storage tank b10, the main water inlet pipe b6 and the auxiliary water inlet pipe b9, and finally realizes the endogenous circulation of water potential energy.

The water in the siphon cleaning drip irrigation system 3 is compound water with silicon-soluble organic cementitious substances added, which cooperates with the microbial activity and metabolic cycle of the compound soil 1 aggregates. The cleaning cycle is coordinated by the first pneumatic valve b5 and the third pneumatic valve b4. It is completed in conjunction with the 7 growth cycles of understory crops.

As shown in Figure 3, hydrogen production system 4 consists of main material pipe A1, auxiliary material pipe A2, demineralized water storage tank B1, cooling device A3, nitrogen storage bottle group A4, electrolyzer B2, drying tank B3, hydrogen buffer tank B4, compression It consists of machine B5, hydrogen replenishing device B6, hydrogen storage bottle group B7 and flame arrester B8. The desalted water is sent to the desalted water storage tank B1 and the cooling device A3 through the main material pipe A1. The desalted water from the desalted water storage tank B1 enters the electrolyzer. B2 produces hydrogen by electrolysis and drying tank B3 is dried. The hydrogen and oxygen in electrolytic tank B2 and drying tank B3 are purged and replaced by nitrogen to separate oxygen and hydrogen. Oxygen is released in electrolytic tank B2 through drain pipe C1, and crude hydrogen is produced. Then it enters the drying tank B3 for processing, and then goes through the compressor B5, the hydrogen supplementing device B6, the hydrogen storage B7 or the hydrogen use process, including the electrolytic tank B2, the drying tank B3, the hydrogen buffer tank B4, the compressor B5, the hydrogen supplementing Device B6 and hydrogen storage bottle group B7 are equipped with flame arrester B8. The desalted water from cooling device A3 cools the electrolyzer B2, drying tank B3 and compressor B5 through the refrigerated water supply pipe D1 and return pipe D2, and removes the demineralized water through the auxiliary material pipe A2. Waste water from brine storage tank B1, electrolyzer B2, drying tank B3, and hydrogen buffer tank B4 is discharged. The water resistivity of the desalted water storage tank B1 is not less than 5 megabytes. The equipment, pipes and valves in contact with gas and liquid media are made of 321SS. The stainless steel pipes are welded by argon arc welding, and the hydrogen and oxygen pipes are degreased.

The mixed hydrogen pipeline 5 is composed of 316 in-service natural gas stainless steel pipeline with a nickel content of more than 12%. The chemical composition of C, Si, Mn, P, S, Cr, Mo, Ni in the stainless steel material, CH4, C2H6, C3H8, The composition of O2, N2, CO2, mixed H2 ratio, pipeline compatibility, hydrogen embrittlement sensitivity, hydrogen safety factor, terminal stove adaptability and hydrogen separation economic indicators construct an evaluation index system. First, the original data characteristics of the cases are collected and sorted. Information sample, the sample content consists of the chemical composition of C, Si, Mn, P, S, Cr, Mo, Ni of stainless steel materials of natural gas pipelines and the target ratio of natural gas CH4, C2H6, C3H8, O2, N2, CO2 and mixed H2 The information parameters are composed of pipeline compatibility, hydrogen embrittlement susceptibility, hydrogen safety factor, terminal stove adaptability and hydrogen separation economic index task attribute parameters; based on a typical sample library with limited data, through sample feature extraction and derivation network, a consistent The multi-objective information parameters and task attribute parameters of typical sample library rules expand the sample library; based on the specific target information parameter excitation, after classification and identification by the fuzzy membership attribute least squares support vector machine optimized by FOA parameters, the specific target information parameter excitation is determined. The task attribute parameter category is given according to the task attribute parameter category. The corresponding sample library index number N is given. According to the sample library index number N, the corresponding rule N sample library is matched in the derived extended sample library, and the rule N sample library is retrieved with the specific input target. The information parameter has the smallest Euclidean distance and a suitable matching degree with a nickel content of more than 12% that meets the task attribute parameter requirements. 316 samples of in-service natural gas stainless steel pipelines and hydrogen mixing proportion plans, extract and output the best proportion attribute parameters, and it is completed. An intelligent decision-making process for pipe materials that is suitable for hydrogen mixing ratio and stainless steel pipe material based on fuzzy membership attribute least squares support vector machine. The selected hydrogen mixing pipeline 5 mixes the hydrogen produced by the hydrogen production system 4 with the natural gas in the natural gas storage tank 6 and then outputs it to the outside, providing a new external delivery route.

The preferred embodiments of the present invention are described in detail above. It should be understood that those skilled in the art can make many modifications and changes according to the concept of the present invention without creative efforts. Therefore, any technical solutions that can be obtained by those skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the present invention and on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

An agro-photovoltaic symbiosis system based on drought stress scenarios, characterized by including compound soil, a photovoltaic system, a siphon cleaning drip irrigation system, a hydrogen production system, and a hydrogen mixing pipeline, and the compound soil is located below the photovoltaic system , the compound soil is configured to plant understory crops, the siphon cleaning drip irrigation system is configured to drip water to the photovoltaic system, the compound soil receives the water, and the photovoltaic system supplies water to the system. The hydrogen system provides electrical energy, the hydrogen production system is configured to produce hydrogen gas, and the hydrogen mixing pipeline is connected to the hydrogen production system.
The agro-photon symbiosis system based on drought stress scenarios according to claim 1, wherein the compound soil is made of red mud and sandy soil mixed in a ratio of 1:9.
The agro-photon symbiosis system based on a drought stress scenario according to claim 2, characterized in that the compound soil is a soil aggregate formed by red mud and sandy soil through dry and wet cycles and pressurized stirring.
The agro-photovoltaic symbiosis system based on drought stress scenarios according to claim 1, characterized in that the photovoltaic system consists of fixed cement cast-in-place piles, high brackets, frameless photovoltaic modules, and cathodic protection grounding connections.
The agro-photon symbiosis system based on a drought stress scenario according to claim 1, wherein the siphon cleaning drip irrigation system includes a storage tank, a main water inlet pipe, an auxiliary water inlet pipe, and a water outlet pipe, and the main water inlet pipe, the One end of the auxiliary water inlet pipe is placed in the storage tank, and the other ends of the main water inlet pipe and the auxiliary water inlet pipe are respectively connected to the water outlet pipe through an overflow tee. There is a third water inlet pipe on the main water inlet pipe. A pneumatic valve and a limit switch, the auxiliary water inlet pipe is provided with a float ball, and the water outlet pipe is provided with a second pneumatic valve.
The agro-photon symbiosis system based on a drought stress scenario according to claim 5, wherein the siphon cleaning drip irrigation system further includes a water storage tower, and the water storage tower is connected to the water storage tank through a conductive cascade water diversion conduit.
The agro-photon symbiosis system based on a drought stress scenario according to claim 5, wherein the water in the siphon cleaning drip irrigation system is compound water with silicon-soluble organic cementitious substances added.
The agro-phosgene symbiosis system based on drought stress scenario according to claim 1, characterized in that the hydrogen production system includes a demineralized water storage tank, an electrolytic tank, a drying tank, a hydrogen buffer tank, a compressor, a charging tank, and a demineralized water storage tank, which are connected in sequence. Hydrogen replenishing device and hydrogen storage bottle group, the electrolytic tank, drying tank, and compressor are also connected to the cooling device, and the electrolytic tank and drying tank are also connected to the nitrogen storage bottle group.
The agro-phosgene symbiosis system based on drought stress scenario according to claim 8, characterized in that the electrolyzer, drying tank, hydrogen buffer tank, compressor, hydrogen replenishing device, and hydrogen storage bottle group are connected with a flame arrester , the desalted water storage tank, electrolyzer, drying tank, and hydrogen buffer tank are equipped with drainage pipes.
The agro-phosgene symbiosis system based on a drought stress scenario as claimed in claim 1, wherein the hydrogen mixing pipe is a 316 stainless steel pipe with a nickel content greater than 12%.