CN214060404U - Double-rotary kiln device for producing biochar based on oxidative roasting coupling pyrolysis - Google Patents
Double-rotary kiln device for producing biochar based on oxidative roasting coupling pyrolysis Download PDFInfo
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- CN214060404U CN214060404U CN202020728668.9U CN202020728668U CN214060404U CN 214060404 U CN214060404 U CN 214060404U CN 202020728668 U CN202020728668 U CN 202020728668U CN 214060404 U CN214060404 U CN 214060404U
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Abstract
The utility model belongs to the technical field of biochar preparation equipment, and discloses a double rotary kiln device for producing biochar based on oxidative curing coupling pyrolysis, wherein a first rotary kiln is connected with a color value monitoring device through a pipeline, and the color value monitoring device and the first rotary kiln are provided with a loop pipe; the color value monitoring device is connected with a second rotary kiln through a pipeline, and the second rotary kiln is provided with a discharge hole; the first rotary kiln is connected with a primary condenser through a pipeline, and the primary condenser is connected with a secondary condenser through a pipeline; the second rotary kiln is connected with a first-stage condenser through a pipeline, and the first-stage condenser is connected with a second-stage condenser through a pipeline; the first rotary kiln is connected with a first flowmeter through a pipeline, and the first flowmeter is connected with an oxygen supply device through a pipeline. The utility model discloses a boiler flue gas cures coupling pyrolysis preparation biochar for curing the protective gas through the oxidation, has both rationally utilized boiler flue gas, has promoted the quality of biochar again.
Description
Technical Field
The utility model belongs to the technical field of charcoal preparation equipment, especially, relate to a two rotary kiln devices based on oxidation cures coupling pyrolysis production charcoal.
Background
At present, the utilization of biomass energy mainly comprises 3 ways such as direct combustion, thermochemical conversion and biochemical conversion. Among them, the thermochemical conversion to produce biochar is more advantageous because of its environmental friendliness and high efficiency. The existing method for preparing the biochar is to directly and slowly heat the biomass to the target pyrolysis temperature under the anoxic condition, and nitrogen is used as protective gas to ensure a good anoxic environment. However, most biomass raw materials have the defects of high moisture, oxygen and alkali metal contents, low volume and energy density, poor grindability and the like. These disadvantages may result in the production of biochar of low and non-uniform quality. According to research, the baking is a low-temperature (200-300 ℃), normal-pressure, anoxic or low-oxygen atmosphere slow pyrolysis, and is an effective method for reducing the oxygen content of the raw material and improving the bulk density and quality of the raw material. The uniformity of the biomass is improved after the biomass is baked, the water content is reduced, the heat value and the energy density are increased, the grindability is improved, the hydrophobicity is enhanced, and the biomass baking method has obvious benefits for storage and transportation of materials. More importantly, the biomass is baked and then pyrolyzed, so that the pyrolysis conversion efficiency and the quality of the product (biochar) can be improved.
The prior art for preparing the biochar has the following problems and defects: at present, biomass carbonization equipment can be roughly divided into fixed bed carbonization equipment and moving bed carbonization equipment. The fixed bed type biomass carbonization equipment is characterized in that the space position of materials in the furnace is basically kept unchanged, the production process sequentially goes through the stages of feeding, heating, carbonization and heat preservation, cooling, discharging and the like, the batch type production is adopted, and the continuous production of related equipment is difficult to realize. The moving bed biomass carbonization equipment has more advantages due to the advantages of good production continuity, higher productivity and the like. However, the two types of carbonization equipment adopt direct pyrolysis, and the quality of the biochar is poor. On the other hand, due to the mixing and carbonization of different raw materials, the quality of the carbon obtained after pyrolysis will be poor and uneven under the influence of the difference of physicochemical properties of the different raw materials. In addition, the byproducts can not be completely recycled, and the carbonized tail gas (containing tar) is directly discharged into the atmosphere, thereby not only polluting the environment, but also wasting energy resources.
In conclusion, the existing biochar production equipment has the problems of unstable carbon quality, low carbon yield, difficult recycling of byproducts and the like; meanwhile, the existing biochar production equipment has no performances of economy, environmental protection and simple and convenient operation.
The difficulty in solving the above problems is:
difficulty 1: the method can improve the physicochemical properties of the raw materials, or make the physicochemical properties of different raw materials more uniform, and can ensure that the quality of the biochar is improved after the physicochemical properties of the raw materials are improved.
Difficulty 2: the real-time feedback regulation and control of the product quality in the production process is realized by adopting a certain method.
Difficulty 3: the method can improve the product quality and simultaneously reduce the production cost as low as possible.
Difficulty 4: the tar is collected by adopting a certain method.
The significance of solving the problems and the defects is as follows:
the problems of unstable carbon quality, low carbon yield, difficult recycling of byproducts and the like of the existing biochar production equipment are solved; provides a biological carbon production device which is economic, environment-friendly and simple and convenient to operate, and provides technical support for the development of the Chinese biological carbon industry.
SUMMERY OF THE UTILITY MODEL
To the problem that prior art exists, the utility model provides a two rotary kiln devices based on oxidation cures coupling pyrolysis production biochar.
The utility model is realized in such a way that a double rotary kiln device for producing biochar based on oxidative curing coupling pyrolysis is provided with a first rotary kiln;
the first rotary kiln is connected with a color value monitoring device through a pipeline, and the color value monitoring device and the first rotary kiln are provided with a loop pipe; the color value monitoring device is connected with a second rotary kiln through a pipeline, and the second rotary kiln is provided with a discharge hole;
the first rotary kiln is connected with a primary condenser through a pipeline, and the primary condenser is connected with a secondary condenser through a pipeline;
the second rotary kiln is connected with a first-stage condenser through a pipeline, and the first-stage condenser is connected with a second-stage condenser through a pipeline;
the first rotary kiln is connected with a first flowmeter through a pipeline, and the first flowmeter is connected with an oxygen supply device through a pipeline.
Further, the first rotary kiln is connected with an online monitoring device through a pipeline, and the online monitoring device is connected with the boiler flue gas cylinder through a pipeline.
Further, the first rotary kiln is connected with a second flowmeter through a pipeline, and the second flowmeter is connected with a nitrogen gas supply device through a pipeline;
the nitrogen gas supply device is connected with a third flow meter through a pipeline, and the third flow meter is connected with the second rotary kiln through a pipeline.
Further, the first-stage condenser and the second-stage condenser are provided with tar outlets.
Further, the online monitoring device is connected with a console through electric signals, and the console is respectively connected with the first flowmeter, the second flowmeter and the third flowmeter through the electric signals.
Combine foretell all technical scheme, the utility model discloses the advantage that possesses and positive effect are:
(1) the utility model discloses a boiler flue gas cures coupling pyrolysis preparation biochar for curing the protective gas through the oxidation, has both rationally utilized boiler flue gas, has promoted the quality of biochar again, has realized cost control when promoting the biochar quality. The utility model discloses a cure the biochar of two segmentation preparation of coupling pyrolysis, the direct pyrolysis of the tradition of adsorption performance has great promotion. The utility model discloses a resource utilization's optimization, economic environmental protection, it is easy and simple to handle, use extensively.
(2) The utility model discloses a be provided with color value monitoring devices, the color value of real-time supervision baking products is based on MLR model (the quality prediction model that founds according to laboratory data) control material quality.
(3) The utility model discloses well nitrogen gas air feeder is connected with first rotary kiln and second rotary kiln respectively, can provide the nitrogen gas compensation for the reaction of material in first rotary kiln and the second rotary kiln. The oxygen supply device is connected with the first rotary kiln and can provide oxygen compensation for the reaction of the materials in the first rotary kiln.
(4) The utility model discloses well one-level condenser and second grade condenser are provided with the tar export, realize the discharge of tar.
(5) The utility model discloses well flue gas on-line monitoring device + control cabinet, but real-time supervision boiler flue gas composition to feedback to control system automatically regulated oxygen and nitrogen gas flowmeter are in order to realize gaseous compensation.
Drawings
Fig. 1 is a schematic structural diagram of a double rotary kiln device for producing biochar based on oxidative roasting coupled pyrolysis provided by an embodiment of the utility model.
In the figure: 1. a console; 2. an on-line monitoring device; 3. a first flow meter; 4. a first rotary kiln; 5. a second flow meter; 6. a third flow meter; 7. a color value monitoring device; 8. a second rotary kiln; 9. a first-stage condenser; 10. a secondary condenser.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
To the problem that prior art exists, the utility model provides a two rotary kiln devices of coupling pyrolysis production biochar are cured based on oxidation, and it is following to combine the figure to do detailed description to the utility model discloses.
As shown in fig. 1, the oxygen supply device is connected to a first flowmeter 3 through a pipe, and the first flowmeter 3 is connected to a first rotary kiln 4 through a pipe.
First rotary kiln 4 passes through the pipeline and is connected with color value monitoring devices 7, and color value monitoring devices 7 sets up the return circuit pipe with first rotary kiln 4. The color value monitoring device 7 is connected with the second rotary kiln 8 through a pipeline, and the second rotary kiln 8 is provided with a discharge hole.
The first rotary kiln 4 is connected with a primary condenser 9 through a pipeline, and the primary condenser 9 is connected with a secondary condenser 10 through a pipeline.
The second rotary kiln 8 is connected with a first-stage condenser 9 through a pipeline, and the first-stage condenser 9 is connected with a second-stage condenser 10 through a pipeline.
The first rotary kiln 4 is connected with the on-line monitoring device 2 through a pipeline, and the on-line monitoring device 2 is connected with the boiler flue gas cylinder through a pipeline.
The first rotary kiln 4 is connected with a second flowmeter 5 through a pipeline, and the second flowmeter 5 is connected with a nitrogen gas supply device through a pipeline; the nitrogen gas supply device is connected with a third flow meter 6 through a pipeline, and the third flow meter 6 is connected with a second rotary kiln 8 through a pipeline.
In this embodiment, the primary condenser 9 and the secondary condenser 10 are provided with tar outlets.
In the present embodiment, the console 1 is connected to the online monitoring device 2, the first flow meter 3, the second flow meter 5, and the third flow meter 6 by electrical signals.
The first rotary kiln 4 is connected with a second flowmeter 5 through a pipeline, and the second flowmeter 5 is connected with a nitrogen gas supply device through a pipeline. The second rotary kiln 5 is connected with a third flow meter 3 through a pipeline, and the third flow meter 3 is connected with a nitrogen gas supply device through a pipeline.
The utility model discloses a theory of operation does: the boiler flue gas composition is monitored in real time through the online monitoring device 2 and fed back to the control console 1, and the control console 1 calculates and automatically adjusts the oxygen and nitrogen flowmeters through the currently set required carrier gas oxygen content so as to realize gas compensation. The first rotary kiln 4 is a baking reaction area, the temperature is 200-300 ℃, the retention time of the materials is controlled by adjusting the rotating speed, a cyclone separator is arranged for discharging gas, the materials with larger particle size are returned to the color value monitoring device 7, and the gas (containing tar) enters a condensation pipeline. The color value monitoring device 7 is used for monitoring the color value of the baked product in real time and judging whether the current material quality is qualified or not according to an MLR model (quality prediction model constructed according to laboratory data). The second rotary kiln 8 is a pyrolysis reaction zone, the temperature is 600-800 ℃, and the retention time of materials is controlled by adjusting the rotating speed. The gas outlet is provided with a cyclone separator, the material with larger particle size is returned, and the gas (containing tar) enters a condensation pipeline. The utility model discloses set up one-level condenser 9 and second grade condenser 10, recoverable condensable gas (promptly tar).
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be covered within the protection scope of the present invention by those skilled in the art within the technical scope of the present invention.
Claims (5)
1. The utility model provides a two rotary kiln devices based on biological charcoal is produced in oxidation baking coupling pyrolysis which characterized in that, two rotary kiln devices based on biological charcoal is produced in oxidation baking coupling pyrolysis are provided with:
a first rotary kiln;
the first rotary kiln is connected with a color value monitoring device through a pipeline, and the color value monitoring device and the first rotary kiln are provided with a loop pipe; the color value monitoring device is connected with a second rotary kiln through a pipeline, and the second rotary kiln is provided with a discharge hole;
the first rotary kiln is connected with a primary condenser through a pipeline, and the primary condenser is connected with a secondary condenser through a pipeline;
the second rotary kiln is connected with a first-stage condenser through a pipeline, and the first-stage condenser is connected with a second-stage condenser through a pipeline;
the first rotary kiln is connected with a first flowmeter through a pipeline, and the first flowmeter is connected with an oxygen supply device through a pipeline.
2. The dual rotary kiln apparatus for producing biochar based on oxidative roasting coupled pyrolysis as claimed in claim 1, wherein the first rotary kiln is connected with an on-line monitoring device through a pipeline, and the on-line monitoring device is connected with a boiler flue gas cylinder through a pipeline.
3. The dual rotary kiln device for producing biochar based on oxidative roasting coupled pyrolysis as claimed in claim 1, wherein the first rotary kiln is connected with a second flowmeter through a pipeline, and the second flowmeter is connected with a nitrogen gas supply device through a pipeline;
the nitrogen gas supply device is connected with a third flow meter through a pipeline, and the third flow meter is connected with the second rotary kiln through a pipeline.
4. The dual rotary kiln apparatus for producing biochar based on oxidative torrefaction coupled pyrolysis as claimed in claim 1, wherein the primary condenser and the secondary condenser are provided with tar outlets.
5. The dual rotary kiln apparatus for producing biochar based on oxidative roasting coupled pyrolysis as claimed in claim 2, wherein the online monitoring device is connected with a console through electrical signals, and the console is respectively connected with the first flow meter, the second flow meter and the third flow meter through electrical signals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020728668.9U CN214060404U (en) | 2020-05-07 | 2020-05-07 | Double-rotary kiln device for producing biochar based on oxidative roasting coupling pyrolysis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020728668.9U CN214060404U (en) | 2020-05-07 | 2020-05-07 | Double-rotary kiln device for producing biochar based on oxidative roasting coupling pyrolysis |
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| CN214060404U true CN214060404U (en) | 2021-08-27 |
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| CN202020728668.9U Active CN214060404U (en) | 2020-05-07 | 2020-05-07 | Double-rotary kiln device for producing biochar based on oxidative roasting coupling pyrolysis |
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