FULLY MODULARIZED MID-FEED PYROLYSIS REACTOR WITH SIMULTANEOUS MULTI-FEED CAPABILITIES

Abstract

A fully modular assembled pyrolysis reactor with multiple feeding points includes modular upper and lower vessels. The lower vessel is equipped with a first biomass input unit, and inside the lower vessel, there is an integrated rotatable grate. The outlet end of the input pipe of the first biomass input device is formed at the top center of the grate, so that the grate's surface forms the core reaction zone of the pyrolysis reactor. The upper vessel is equipped with additional biomass input units, and the outlet end of the input pipe of the additional biomass input units extend into the core reaction zone of the pyrolysis reactor, with built-in cooling function and door switch. While achieving precise control, the technical problem of single feedstock in existing vertical pyrolysis reactor with bottom feeding is solved, and the use of multiple feedstocks can be immediately implemented, greatly improving operational stability.

Claims

1. A pyrolysis reactor having multiple simultaneous feeds, comprising: a modular lower vessel (1), provided with a first biomass input unit (11), wherein a rotatable grate (12) is integrally integrated in the lower vessel (1), and an outlet end of an input pipe of the first biomass input unit (11) is formed at the top center of the grate (12), so that the surface of the grate (12) forms a core reaction zone of the pyrolysis reactor; and a modular upper vessel (2), provided with one or more second biomass input units (21), wherein an outlet end of an input pipe of the second biomass input unit (21) goes deep into the core reaction zone of the pyrolysis reactor.

2. The pyrolysis reactor having multiple simultaneous feeds according to claim 1, wherein the input pipes of the first biomass input unit (11) and the second biomass input unit (21) are each internally provided with a screw for conveying a biomass.

3. The pyrolysis reactor having multiple simultaneous feeds according to claim 1, wherein the input pipe of the one or more second biomass input units (21) are provided with a thermal insulation structural layer on a section inside the lower vessel (1).

4. The pyrolysis reactor having multiple simultaneous feeds according to claim 3, wherein the thermal insulation structural layer is coated with an insulating material, or the thermal insulation structural layer is a circulating water-cooling layer.

5. The pyrolysis reactor having multiple simultaneous feeds according to claim 1, wherein the top center of the grate (12) is provided with a material distribution tower (13) having a pointed apex and a bowl structure, and the material distribution tower (13) covers the outlet end of the input pipe of the first biomass input unit (11).

6. The pyrolysis reactor having multiple simultaneous feeds according to claim 1, wherein the outlet end of the input pipe of the one or more second biomass input units (21) are provided with a valve (22) which automatically closes under gravity.

7. The pyrolysis reactor having multiple simultaneous feeds according to claim 1, wherein the upper vessel (2) is split.

8. The pyrolysis reactor having multiple simultaneous feeds according to claim 1, wherein a plurality of water-cooling pipes (14) communicating with each other are connected in the lower vessel (1), the water-cooling pipes (14) are fixed in the lower vessel (1), and the water-cooling pipes (14) are arranged above the surface of the grate (12) to stir and mix a biomass on the grate (12).

9. The pyrolysis reactor having multiple simultaneous feeds according to claim 1, further comprising a modular ash/char discharge seat (3) integrally integrable with the lower vessel (1), wherein the ash/char discharge seat (3) is detachably arranged at the bottom of the lower vessel (1), circular strip-shaped ash/char discharge ports (31) are formed at the bottom of the surface of the grate (12) and the inner wall of the lower vessel (1), and waste ash/char after completion of the reaction enters the ash/char discharge seat (3) through the ash/char discharge ports (31).

10. The pyrolysis reactor having multiple simultaneous feeds according to claim 9, wherein respective corresponding connections of the upper vessel (2), the lower vessel (1), and the ash/char discharge seat (3) are each in ring fit, so as to achieve modular assembly horizontally in any direction.

Description

BRIEF DESCRIPTION OF DRAWINGS

[0023] FIG. 1 shows a schematic diagram of the fully modularized, multi-feed, simultaneous pyrolysis reactor of the present invention.

[0024] FIG. 2 illustrates the internal structure of the upper and lower vessels of the fully modularized, multi-feed, simultaneous pyrolysis reactor of the present invention.

[0025] In the figures:

[0026] 1Lower vessel, 11First biomass input unit, 12Grate, 13Material distribution tower, 14Water cooling pipeline; 2Upper vessel, 21One or more Second biomass input units, 22Valve; 3Ash/char discharge seat, 31Ash/char discharge port.

DETAILED DESCRIPTION OF EMBODIMENTS

[0027] The following detailed description of the embodiments of the present invention, in conjunction with the accompanying drawings, describes the technical solutions in the embodiments of the present invention clearly and completely. It is evident that the described embodiments are only a part of the embodiments of the present invention, not all embodiments. The description of at least one exemplary embodiment is illustrative only and is not to be construed as limiting the scope of the present invention. All other embodiments obtained by a person skilled in the art without creative work based on the embodiments of the present invention are within the scope of the present invention.

[0028] As shown in FIGS. 1-2, the present invention provides a fully modularized, multi-feed, simultaneous pyrolysis reactor, including modularized lower vessel 1 and upper vessel 2. The lower vessel 1 is equipped with a first biomass input unit 11, and at the same time, a rotatable grate 12 is integrally integrated inside the lower vessel 1. The outlet end of the input pipe of the first biomass input unit 11 is located at the top center of the grate 12, so that the surface of the grate 12 forms the core reaction zone of the pyrolysis reactor. The upper vessel 2 is equipped with one or more second biomass input units 21, and the outlet end of the input pipe of the one or more second biomass input units 21 extend into the core reaction zone of the pyrolysis reactor.

[0029] The first biomass input unit 11 can input dried sludge particles. Due to the instability of the calorific value of dried sludge sometimes, when the calorific value is low, the pyrolysis reaction may become unstable. At this time, the control system of the pyrolysis reactor will determine that higher calorific value fuel is needed. Therefore, the second biomass input unit 21 can input high-calorific-value dried wood chips according to the calculation results of the control system. The input, automatic input, and control of the amount and rate of biomass input can be achieved through the control system, realizing stable and precise control of the biomass pyrolysis reactor.

[0030] When the second biomass feedstock is not needed to be input, the input can be stopped immediately. When the input is stopped, the heat insulation layer and the valve 22 can protect the pyrolysis reactor from affecting the second feedstock still in the input unit.

[0031] The second biomass feedstock can be organic solid waste, such as PE plastic pieces, RDF, etc. Due to the small quantity, it needs to react after being mixed with the primary biomass feedstock.

[0032] The fully modularized, multi-feed, simultaneous pyrolysis reactor of the present invention can simultaneously input at least two kinds of biomass feedstock. The amount of input biomass and the capacity of the reactor can also be increased, about 4-10 times the capacity of a single-feed reactor. Moreover, the fully modularized, multi-feed, simultaneous pyrolysis reactor of the present invention can be modularly manufactured. It can be pre-installed with electrical and monitoring systems by professional technicians in the workshop of the reactor manufacturer and undergo comprehensive cold and hot debugging. Then, it can be modularly transported to the site to avoid rough installation by non-professional construction personnel at the work site, shorten 90% of the on-site installation time, and ensure the installation quality. Modular installation also ensures that the angles of feeding, air intake, ash/char discharge, gas discharge, etc., can be adjusted at any time. Under the standardization of various modular equipment, the angles of various installations can be adjusted like building blocks to meet the on-site requirements of customers without changing the overall design of the pyrolyzer. In summary, modular design not only maximizes commercialization but also achieves precise control of pyrolysis reactions.

[0033] In a specific embodiment of the present invention, both the first biomass input unit 11 and the one or more second biomass input units 21 are equipped with screws for transporting biomass inside the input pipe.

[0034] In a specific embodiment of the present invention, a heat insulation layer is provided on a section of the input pipe of the second biomass input unit 21 inside the lower vessel 1.

[0035] Specifically, the heat insulation layer is covered with insulation material, or the heat insulation layer is a circulating water-cooling or air-cooling layer.

[0036] In a specific embodiment of the present invention, the top center of the grate 12 is equipped with a material distribution tower 13 with a pointed top and a bowl-shaped structure. The material distribution tower 13 shields the outlet end of the input pipe of the first biomass input unit 11 to prevent the biomass input from the one or more second biomass input units 21 on the upper vessel 2 from entering the input pipe of the first biomass input unit 11 on the lower vessel 1. It ensures that the biomass input from the second biomass input unit 21 eventually falls uniformly onto the surface of the grate 12 below, ensuring uniform pyrolysis reaction.

[0037] In a specific embodiment of the present invention, the outlet end of the input pipe of the one or more second biomass input units 21 are equipped with a valve 22 that automatically closes under the action of gravity. For example, the outlet end of the input pipe of the second biomass input unit 21 is designed to protrude downward obliquely. When the input pipe no longer feeds, the valve 22 will automatically press against the protruding outlet end under the action of gravity.

[0038] In a specific embodiment of the present invention, the upper vessel 2 can be a monolithic structure, or the upper vessel 2 can be configured as a split type, divided into two or more segments for transportation and installation convenience.

[0039] In a specific embodiment of the present invention, the lower vessel 1 is connected with multiple interconnected water-cooling pipelines 14 inside, the water cooling pipelines 14 are fixed inside the lower vessel 1, and the water cooling pipelines 14 are arranged above the surface of the grate 12 to stir and agitate the biomass on the surface of the grate 12, preventing the biomass from arching and/or agglomeration on the surface.

[0040] In a specific embodiment of the present invention, the fully modularized, multi-feed, simultaneous pyrolysis reactor further includes a modular ash/char discharge seat 3 that can be integrated with the lower vessel 1. The ash/char discharge seat 3 can be detachably arranged at the bottom of the lower vessel 1. At the same time, the bottom of the surface of the grate 12 is formed with a circular ash/char discharge port 31 at the inner wall of the lower vessel 1, and the waste residue after the reaction enters the ash/char discharge seat 3 through the ash/char discharge port 31.

[0041] The fully modularized, multi-feed, simultaneous pyrolysis reactor of the present invention, the upper vessel 2, the lower vessel 1, and the ash/char discharge seat 3 all correspond to circular ring matches, so as to achieve modular assembly with any direction adjustment in the horizontal direction. The main modular split equipment of the pyrolysis reactor can be assembled in any combination direction like building blocks, such as feeding, air intake, ash/char discharge, gas discharge, etc., to meet various usage requirements of customers without changing the overall design of the pyrolyzer itself.

[0042] It should be understood that the specific embodiments described above are only used to explain the present invention and are not intended to limit the present invention. Obvious changes or modifications derived from the spirit of the present utility model are still within the protection scope of the present utility model.