CN205473612U - Living beings coal carbonization gasification production high heating value synthetic gas device - Google Patents

Abstract

The utility model discloses a biomass/coal dry distillation gasification device for producing high calorific value synthesis gas, comprising a pulverizer connected in sequence, a first storage tank, a star feeder, an induced draft fan, a riser dryer, and a first cyclone separation device, second storage tank, screw feeder, dry distillation gasification reactor, third separator, the first path of the third separator is connected to the combustion furnace through the second return device, and the second path is through semi-coke return The gasification reactor is connected with the gasification reactor; the third path is connected with the reforming reactor and the Roots blower in turn through the fourth cyclone separator, and the fourth cyclone separator and the reforming reactor are respectively connected with the first feeder; the first return The feeder is connected to the combustion furnace; the combustion furnace is connected to the second cyclone separator; one path of the second cyclone separator is respectively connected to the dry distillation gasification reactor, reforming reactor, and gasification reactor through the catalyst storage tank and valves, and the other path It is connected with the heat exchanger, and the blower is connected with the heat exchanger. The production cycle is short and suitable for industrial applications.

Description

Biomass/coal dry distillation gasification to produce high calorific value synthesis gas device

technical field

The utility model belongs to the field of energy technology and relates to a biomass/coal dry distillation gasification device for producing high calorific value synthesis gas.

Background technique

With the increasing demand for energy in the global economic development and the concern about environmental pollution, the development of clean coal conversion technology and the development of biomass energy utilization technology have gradually become research hotspots. Biomass/coal gasification technology is one of the key technologies that researchers have paid much attention to.

Gasification technology can be divided into retort gasification and reactive gasification according to the gas production mechanism. Reactive gasification can be divided into air gasification, water vapor gasification, oxygen gasification and hydrogen gasification according to the different reaction atmospheres. Compared with reactive gasification, research on retort gasification is less. Retort gasification generally regards retort gas with medium calorific value as the main product, and at the same time by-products biocoke/coal char. At present, the existing retort technology generally has a relatively long production cycle and a small scale, which limits the large-scale use of this technology application. Therefore, the development of new biomass/coal pyrolysis gasification process has important research value.

Utility model content

The purpose of the utility model is to provide a biomass/coal dry distillation gasification device for producing high calorific value synthesis gas, which solves the problems existing in the prior art, has a short production cycle and is suitable for industrial application.

The technical solution adopted by the utility model is a biomass/coal carbonization gasification production of high calorific value synthesis gas device, including a pulverizer connected in sequence, a first storage tank, a star feeder, an induced draft fan, and a riser Dryer, the first cyclone separator, the second storage tank, the screw feeder, the dry distillation gasification reactor, the third separator, the output of the third separator is three ways, the first way passes through the second return feeder and the combustion The second path is connected to the gasification reactor through the semi-coke return feeder, and the steam boiler is connected to the gasification reactor; the third path is connected to the reforming reactor and Roots blower in turn through the fourth cyclone separator. The four-cyclone separator and the reforming reactor are not connected to the first feeder; the gasification reactor has two outputs, one is connected to the water washing tower, and the other is connected to the first feeder; the first feeder is connected to the combustion furnace connected; the combustion furnace is connected to the second cyclone separator; the second cyclone separator has two outputs, one of which is respectively connected to the dry distillation gasification reactor, reforming reactor, and gasification reactor through the catalyst storage tank and valve, and the other is connected to the The heat exchanger is connected, the blower is connected to the heat exchanger, and the heat exchanger has two outputs, one of which is connected to the induced draft fan through the fifth cyclone separator, and the other is directly connected to the combustion furnace.

Further, the dry distillation gasification reactor is a down-flow fluidized bed reactor.

Further, the reforming reactor is one of bubbling fluidized bed reactor, ebullating fluidized bed reactor or spouted bed reactor.

Further, the gasification reactor is one of bubbling fluidized bed reactor, ebullating fluidized bed reactor or spouted bed reactor.

Further, the third separator is a separator utilizing gravity and inertial force.

The beneficial effects of the utility model are: 1. From the structure of the device, the retort gasification reactor used in the process is a down-flow fluidized bed reactor, which uses gravity to realize the mixed reaction of the catalyst and the raw material, which has low energy consumption and is easy to industrialize. Significant advantages of amplification and high calorific value of product gas; the reforming reactor and gasification reactor used are one of bubbling fluidized bed reactor, ebullating fluidized bed reactor or spouted bed reactor, with uniform temperature , easy to control and easy to industrial amplification characteristics. 2. From the design of the process flow, the dry distillation gasification of biomass/coal is combined with the reforming of the generated gas. The reforming reaction of the gas improves the utilization rate of carbon dioxide and can significantly increase the calorific value of the product gas; Gasification and partial combustion of the semi-coke generated by biomass gasification, on the one hand, solves the harm of tar in the process of biomass gasification, on the other hand, realizes self-sufficiency in energy consumption of the process, and has obvious technical advantages. 3. From the selection of process parameters, it can ensure that the reaction of each step is fully carried out. If the temperature is low, the reaction cannot be fully carried out. If the temperature is too high, it may affect the structural properties of the catalyst.

Description of drawings

Fig. 1 is the structural representation of the utility model device.

In the figure, 1-crusher, 2-first storage tank, 3-star feeder, 4-induced fan, 5-riser dryer, 6-first cyclone separator, 7-second storage Tank, 8-screw feeder, 9-distillation gasification reactor, 10-second cyclone separator, 11-third separator, 12-semi-coke return device, 13-Roots blower, 14-fourth Cyclone separator, 15-reforming reactor, 16-first feeder, 17-combustion furnace, 18-second feeder, 19-gasification reactor, 20-heat exchanger, 21-blower, 22 - fifth cyclone separator, 23 - catalyst storage tank, 24 - valve, 25 - steam boiler, 26 - water washing tower.

detailed description

The utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

A biomass/coal dry distillation gasification device for producing high calorific value synthesis gas, the structure is shown in Figure 1, including a pulverizer 1 connected in sequence, a first storage tank 2, a star feeder 3, an induced draft fan 4, a lifting Tube dryer 5, first cyclone separator 6, second storage tank 7, screw feeder 8, dry distillation gasification reactor 9, third separator 11, third separator 11 has three outputs, the first The second path is connected to the combustion furnace 17 through the second returner 18, the second path is connected to the gasification reactor 19 through the semi-coke returner 12, and the steam boiler 25 is connected to the gasification reactor 19; the third path is passed through the fourth cyclone The separator 14 is sequentially connected to the reforming reactor 15 and the Roots blower 13, and the fourth cyclone separator 14 and the reforming reactor 15 are respectively connected to the first feeder 16; the gasification reactor 19 has two outputs, one of which is connected with water washing The tower 26 is connected, and the other road is connected with the first feeder 16; the first feeder 16 is communicated with the combustion furnace 17; the combustion furnace 17 is connected with the second cyclone separator 10; the second cyclone separator 10 outputs two roads, one road The catalyst storage tank 23 and the valve 24 are respectively connected to the dry distillation gasification reactor 9, the reforming reactor 15, and the gasification reactor 19, and the other is connected to the heat exchanger 20, and the blower 21 is connected to the heat exchanger 20 for heat exchange. Device 20 outputs two paths, one path is connected with induced draft fan 4 through the fifth cyclone separator 22, and the other path is directly connected with combustion furnace 17.

Dry distillation gasification reactor 9 is a down-flow fluidized bed reactor.

The reforming reactor 15 is a bubbling fluidized bed reactor, an ebullating fluidized bed reactor or a spouted bed reactor.

The gasification reactor 19 is one of a bubbling fluidized bed reactor, an ebullating fluidized bed reactor or a spouted bed reactor.

A method for producing high calorific value synthesis gas by dry distillation and gasification of biomass/coal, using the above-mentioned device, specifically comprising the following steps:

The biomass/coal raw material is pulverized by the pulverizer 1 until the particle size is less than 3mm, and then it is added to the first storage tank 2, and the feed amount is controlled by the star feeder 3 to mix with the flue gas, and is transported to the riser dryer by the induced draft fan 4 5. After drying to remove moisture, the water content is less than 10%, and then enter the first cyclone separator 6 to realize gas-solid separation; wherein, the flue gas is discharged, and the raw material enters the second storage tank 7; and then passes through the screw feeder 8 is transported to the top of the dry distillation gasification reactor 9, the high-temperature catalyst separated by the second cyclone separator 10 enters the top of the dry distillation gasification reactor 9 through the catalyst storage tank 23, the raw material is mixed with the high-temperature catalyst, and is generated in the dry distillation gasification reactor 9 Dry distillation gasification reaction, the reaction temperature is 750-1000°C; the product after the reaction is divided into three parts: high-temperature oil gas, catalyst mixed with a small amount of semi-coke, and semi-coke mixed with a small amount of catalyst through the third separator 11; among them, the high-temperature oil gas is taken by Roots The fan 13 attracts, and the fine particles are separated by the fourth cyclone separator 14, and then enter the reforming reactor 15, where a high-temperature oil-gas reforming reaction occurs. If it is greater than 20MJ/Kg, it will be discharged as a product. The catalyst mixed with a small amount of semi-coke separated by the third separator 11 is transported to the combustion furnace 17 by the second return device 18; Transported to the gasification reactor 19 and the high-temperature steam generated by the steam boiler 25 for gasification reaction, the reaction temperature in the semi-coke return device 12 is 800-1000°C, the gasification reaction temperature is 900°C, and the generated heat value is greater than 20MJ /Kg high calorific value synthesis gas, the synthesis gas is discharged as a product after being condensed by the water washing tower 26; the heat sources of the reforming reactor 15 and the gasification reactor 19 all come from the high temperature separated from the second cyclone separator 10 in the catalyst storage tank 23 Catalyst; the fine particles separated by the fourth cyclone separator 14, the reforming reactor 15, and the gasification reactor 19 are transported to the combustion furnace 17 by the first feeder 16; in the combustion furnace 17, the catalyst and semi-coke are generated Combustion reaction, heats the catalyst, and is separated by gas and solid in the second cyclone separator 10. The catalyst returns to the dry distillation gasification reactor 9, the reforming reactor 15 and the gasification reactor 19 through the catalyst storage tank 23 for recycling, and the high-temperature flue gas Entering the heat exchanger 20 and exchanging heat with the cold air blown by the blower 21, the cold air is heated and enters the combustion furnace 17, and the high-temperature flue gas is cooled to 300°C-450°C medium-temperature flue gas and then enters the fifth cyclone separator 22 , the worn catalyst is separated and discharged, and the medium-temperature flue gas is attracted by the induced draft fan 4 and enters the riser dryer 5 to dry the raw materials.

Claims (5)

1. biomass/coal carbonization gas metaplasia produces high heating value synthesis gas device, it is characterised in that include the powder being sequentially connected with Broken machine (1), the first storage tank (2), star-like feeder (3), air-introduced machine (4), riser exsiccator (5), First cyclone separator (6), the second storage tank (7), feeding screw (8), destructive gasifying reactor (9), 3rd separator (11), the 3rd separator (11) exports three tunnels, and the first via is by the second material returning device (18) and burning Stove (17) connects, and the second tunnel is connected with gasification reactor (19) by semicoke material returning device (12), steam boiler (25) It is connected with gasification reactor (19)；3rd tunnel by the 4th cyclone separator (14) be sequentially connected with reforming reactor (15), Roots blower (13), the 4th cyclone separator (14), reforming reactor (15) respectively with the first material returning device (16) Connect；Gasification reactor (19) output two-way, a road is connected with water scrubber (26), another road and the first material returning device (16) Connect；First material returning device (16) connects with combustion furnace (17)；Combustion furnace (17) and the second cyclone separator (10) Connect；Second cyclone separator (10) output two-way, leads up to catalyst storage tank (23), valve (24) respectively It is connected with destructive gasifying reactor (9), reforming reactor (15), gasification reactor (19), another road and heat exchanger (20) connecting, aerator (21) is connected with heat exchanger (20), and heat exchanger (20) exports two-way, leads up to the Five cyclone separator (22) are connected with air-introduced machine (4), and another road is directly connected with combustion furnace (17).

A kind of biomass/coal carbonization gas metaplasia the most according to claim 1 produces high heating value synthesis gas device, and its feature exists In, described destructive gasifying reactor (9) is downstriker fluidized-bed reactor.

A kind of biomass/coal carbonization gas metaplasia the most according to claim 1 produces high heating value synthesis gas device, and its feature exists In, described reforming reactor (15) is in bubbling fluidized bed reactor, fluidizing fluid-bed reactor or spouted bed reactor One.

A kind of biomass/coal carbonization gas metaplasia the most according to claim 1 produces high heating value synthesis gas device, and its feature exists In, described gasification reactor (19) is in bubbling fluidized bed reactor, fluidizing fluid-bed reactor or spouted bed reactor One.

A kind of biomass/coal carbonization gas metaplasia the most according to claim 1 produces high heating value synthesis gas device, and its feature exists In, described 3rd separator (11) is the separator utilizing gravity and inertia force.