System for dopping natural gas with hydrogen

Abstract

The invention relates to a system for dropping natural gas with hydrogen and belongs to the technical field of energy. The system comprises a natural gas pipeline, a natural gas flow meter, a buffer tank, a hydrogen storage tank, a hydrogen flow controller, a hydrogen flow meter and a control module, wherein the natural gas flow meter and the hydrogen flow meter are used for monitoring the natural gas flow in the natural gas pipeline and the hydrogen flow in the hydrogen pipeline in real time, the control module controls the opening degree of a valve in the hydrogen flow controller according to monitoring results of the natural gas flow meter and the hydrogen flow meter and the target proportion of the hydrogen doping ratio, so that the hydrogen flow in the hydrogen pipeline is adjusted, and it is ensured that the hydrogen doping ratio of natural gas is within a target range. The system is simple in structure and high in safety, the natural gas and the hydrogen can be effectively mixed, the fluctuation range of the hydrogen doping ratio of the natural gas is small, and the system has good good application prospects.

Description

technical field [0001] The invention relates to a hydrogen doping system for natural gas, which belongs to the technical field of energy. Background technique [0002] Hydrogen production from renewable energy is an effective way to solve the problem of green power consumption such as wind and light in my country. However, due to the geographical mismatch of production and consumption loads and the large-scale transportation of hydrogen, hydrogen doping with natural gas is the solution to the long-term problem of large-scale hydrogen. One of the feasible ways of distance transportation. Natural gas hydrogenation technology is an energy technology that mixes hydrogen into natural gas at a certain volume ratio to form hydrogen-doped natural gas (HCNG), which is transported through existing natural gas pipelines and can directly replace natural gas for use. The breakthrough and application of this technology will contribute to the smooth implementation of my country's green ene...

AI Technical Summary

Problems solved by technology

If the volume ratio of hydrogen-doped HCNG supplied by the upstream exceeds the range, it may bring safety risks or lead to a decline in energy utilization efficiency, so it is necessary to keep the ratio of hydrogen-doped HCNG basically stable

The natural gas flow rate of natural gas pipelines generally fluctuates within a certain range. If the hydrogen doping amount cannot be adjusted in time according to the natural gas flow rate, the hydrogen doping ratio may exceed the control range, bringing safety risks to the entire gas transmission system and downstream users.

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