Method for using adsorption natural gas as automobile fuel

Abstract

The invention relates to a method that absorbed natural gas is used as automobile fuel. Pre-removing hydrocarbon process is carried out in gas station. Main equipments comprises working and regeneration automatic switching hydrocarbon removal equipment with hydrocarbon removal absorbent and gas machine for pressure tank of gas storage and filling natural gas for automobile. Heat exchanging process is carried out on automobile. Main equipment is absorbed natural gas steel bottle with heat exchanger. Inlet and outlet of cycling water of heat exchanger is connected with water tank of automobile by pipes. Natural gas treated by hydrocarbon removal is filled in the natural gas steel bottle by the gas machine and heat quantity absorbed in the natural gas steel bottom when super-activated carbon desorbs natural gas is compensated by heat quantity of cooled water in cylinder of automobile. The characteristic of invention is that main problem that absorbed natural gas technology is applied in automobile is solved; pre-removing hydrocarbon process and heat exchanging process are implemented in gas station and on automobile; an economical practical safe feasible method is provided for applying absorbed natural gas technology on automobile.

Description

(1) Technical field [0001] The invention relates to a method for using natural gas as a vehicle fuel, in particular to a method for using adsorbed natural gas as a vehicle fuel. (2) Background technology [0002] At present, the method of using natural gas as a vehicle fuel mainly adopts the following two forms: 1. Compressed natural gas (CNG) technology: the natural gas is purified and compressed, and then stored in a container at a high pressure of 20MPa; 2. Liquefied natural gas (LNG) technology : The oilfield natural gas is used as the raw material gas, first desulfurized, dehydrated, purified, and then frozen to below -162°C to make the liquefied gas into a liquid state, and then filled into a special low-temperature storage tank. The disadvantages of using compressed natural gas technology are: due to the high compression ratio of natural gas, special compressors and ultra-high pressure pressure vessels are required, high energy consumption, high cost, and potential sa...

AI Technical Summary

Problems solved by technology

The disadvantages of using compressed natural gas technology are: due to the high compression ratio of natural gas, special compressors and ultra-high pressure pressure vessels are required, high energy consumption, high cost, and potential safety hazards; the disadvantages of using liquefied natural gas technology are: liquefied natural gas requires low-temperature storage, Special equipment is required for liquefaction, and special low-temperature tanks are required for storage and transportation, which is very expensive

The main problems affecting the application of adsorption storage natural gas technology to automobiles are: 1. Since natural gas contains a small amount of C 3 、C 4 After a period of use, the super activated carbon loses its activity and gradually reduces the adsorption capacity of natural gas; 2. The super activated carbon is in the adsorption and When desorbing natural gas, it needs to release heat and absorb heat respectively. The temperature rise of super activated carbon can reach 80°C when it is quickly inflated, and the temperature drop of super activated carbon can reach 40°C when it is quickly degassed (desorbed).

These issues create barriers to the adoption of adsorbed natural gas technology in vehicles

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