Biomass pyrolysis and catalytic cracking system

Abstract

The invention belongs to the technical field of biomass pyrolysis and mainly provides a biomass pyrolysis and catalytic cracking system based on regenerative radiant tube heating. The system comprises the following parts: a pyrolysis hopper, a first feeding device, a pyrolysis and catalytic cracking reactor, a cracked gas cyclone separator, a spray tower and a gas tank, wherein the pyrolysis and catalytic cracking reactor comprises a feeding hole, a pyrolysis chamber, a cracking chamber, a cracked gas outlet, regenerative radiant tubes, a heat insulating brick wall, a catalyst adding device and a communicating component. The system has the beneficial effects that the reaction system has a simple structure, is convenient to operate, is uniform in temperature distribution and has good heating effects; the oil gas generated in the pyrolysis chamber can undergo deep cracking in the cracking chamber to crack macromolecular tar molecules into micromolecular gaseous hydrocarbon; the reaction system can generate plenty of cracked gas products, thus avoiding the problem that the pyrolysis oil contains dust and truly achieving clean and efficient utilization of fossil fuel.

Description

technical field

[0001] The invention belongs to the technical field of biomass pyrolysis, and mainly relates to a biomass pyrolysis and catalytic cracking system heated by a regenerative radiant tube to produce clean combustible gas. Background technique

[0002] Biomass energy is the fourth largest resource on earth and also the renewable energy with the largest reserves. Biomass has the characteristics of wide distribution, abundant reserves, renewable and low pollution, and is one of the most potential alternative energy sources for fossil energy. At present, the energy utilization of biomass energy is mainly based on fermentation to produce fuel, biogas, gasification, rapid pyrolysis, and carbonization. Among them, the production of fuel and biogas by fermentation mainly uses herbal plants. The disadvantages of this technology, such as long production cycle and low yield, limit its development; gasification technology for gas production is mostly used in power generatio...

Examples

Embodiment example

[0071] Implementation case: use regenerative moving bed pyrolysis and catalytic cracking system to process pine wood chips. The basic data of raw materials are shown in Table 1.

[0072] Table 1: Basic data of pine wood chips

[0073]

[0074] Using this reaction system to process pine wood chips, the yield of gas products obtained is 68%, and the pyrolysis tar is almost completely cracked into gaseous products, with a high gas yield.

[0075] In the description of the present invention, it should be understood that the terms "first" and "second" are used for description purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features.

technical field

[0001] The invention belongs to the technical field of biomass pyrolysis, and mainly relates to a biomass pyrolysis and catalytic cracking system heated by a regenerative radiant tube to produce clean combustible gas. Background technique

[0002] Biomass energy is the fourth largest resource on earth and also the renewable energy with the largest reserves. Biomass has the characteristics of wide distribution, abundant reserves, renewable and low pollution, and is one of the most potential alternative energy sources for fossil energy. At present, the energy utilization of biomass energy is mainly based on fermentation to produce fuel, biogas, gasification, rapid pyrolysis, and carbonization. Among them, the production of fuel and biogas by fermentation mainly uses herbal plants. The disadvantages of this technology, such as long production cycle and low yield, limit its development; gasification technology for gas production is mostly used in power generatio...

Examples

Embodiment example

[0071] Implementation case: use regenerative moving bed pyrolysis and catalytic cracking system to process pine wood chips. The basic data of raw materials are shown in Table 1.

[0072] Table 1: Basic data of pine wood chips

[0073]

[0074] Using this reaction system to process pine wood chips, the yield of gas products obtained is 68%, and the pyrolysis tar is almost completely cracked into gaseous products, with a high gas yield.

[0075] In the description of the present invention, it should be understood that the terms "first" and "second" are used for description purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features.

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