Cracking carbonization-based activated carbon preparation device for blue-green algae

Abstract

The utility model discloses a cracking carbonization based activated carbon preparation device for blue-green algae, which relates to the technical field of blue-green algae and comprises a drying system, a carbonization system and an activation system, the carbonization system is fixedly mounted on the right side of the drying system, and the activation system is fixedly mounted on the right side of the carbonization system. The drying system comprises a drying machine, a mixer, a first discharging bin, a crusher and a steam pipe bundle; the drying machine is fixedly mounted on the left side of the carbonization system. According to the device for preparing the activated carbon for the blue-green algae based on cracking and carbonization, sludge and the blue-green algae are mixed and stirred according to a certain proportion and then conveyed into the drying machine, drying treatment is carried out, so that the water content of the mixture is reduced to 30% or below, and then the dried mixture is subjected to cracking, carbonization and activation, so that the activated carbon for the blue-green algae is obtained. The sludge is prepared into a high-quality carbon adsorption material through a carbonization activation technology, and the activated carbon prepared from the sludge and the blue-green algae has certain advantages in the aspects of effective utilization and recycling of energy sources, emission reduction of greenhouse gases and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of blue algae, and in particular relates to a device for preparing activated carbon for blue algae based on cracking and carbonization. Background Art

[0002] Due to eutrophication, lakes, reservoirs and other water bodies cause algae to multiply in large numbers, thus forming cyanobacteria. When cyanobacteria blooms occur, the water surface is covered with a thick layer of blue-green lake indigo, which migrates to the shore and accumulates with the wind direction, and emits an unpleasant odor after rotting. On the one hand, large-scale cyanobacteria outbreaks inhibit the growth and reproduction of other algae in the water body, reduce the variety of algae, reduce biodiversity, and thus destroy the balance of the ecosystem. On the other hand, it causes the deterioration of water quality in lakes, reservoirs and other water bodies, which is manifested as black and smelly water and a decrease in dissolved oxygen.

[0003] At present, algae removal technology is a technology that uses physical means such as machinery or engineering to control blue algae blooms, including artificial salvage technology, water dilution technology, shading technology, aeration technology, ultrasonic algae removal technology, etc. Physical algae removal technology can achieve the rapid removal of blue algae blooms on the surface of lakes and reservoirs, and has less negative impact on the water environment. Since some technologies are affected by water conditions and have a limited treatment range, it is often necessary to use a combination of multiple methods to control blue algae blooms. In addition, physical methods are costly and incomplete. Utility Model Content

[0004] The technical problem to be solved by the utility model is that the current physical algae removal technology has high cost and incomplete treatment.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a device for preparing activated carbon for cyanobacteria based on cracking and carbonization, comprising a drying system, a carbonization system and an activation system, the carbonization system is fixedly installed on the right side of the drying system, the activation system is fixedly installed on the right side of the carbonization system, the drying system comprises a dryer, a mixer, a first discharge bin, a pulverizer and a steam pipe bundle, the dryer is fixedly installed on the left side of the carbonization system, the mixer is fixedly installed on the left side of the dryer, the first discharge bin is fixedly installed on the top of the mixer, the pulverizer is fixedly installed on the right side of the dryer, and the steam pipe bundle is fixedly installed in the inner cavity of the dryer.

[0006] As a preferred embodiment of the utility model, the dryer and the pulverizer are connected via a first connecting pipe, a first discharge valve is fixedly installed on the right side of the first connecting pipe, and a first discharge pump is fixedly installed on the front side of the first discharge valve.

[0007] As a preferred embodiment of the utility model, a second connecting pipe is fixedly installed on the right side of the crusher, a second discharge valve is fixedly installed on the right side of the second connecting pipe, a second discharge pump is fixedly installed on the front of the second discharge valve, an air cooler is fixedly installed on the right side of the second discharge pump, a second discharge bin is fixedly installed on the right side of the air cooler, and a first conveyor belt is fixedly installed on the bottom of the second discharge bin.

[0008] As a preferred embodiment of the present invention, the carbonization system includes a pyrolysis carbonization furnace, a feed inlet, a furnace door, and an air inlet pipe, and the pyrolysis carbonization furnace is fixedly installed on the right side of the drying system.

[0009] As a preferred embodiment of the utility model, the feed inlet is opened on the left side of the pyrolysis carbonization furnace, the furnace door is movably installed in the inner cavity of the feed inlet, and the air inlet pipe is fixedly installed on the top of the pyrolysis carbonization furnace.

[0010] As a preferred embodiment of the present invention, the activation system and the carbonization system are connected by a second conveyor belt, the activation system includes an activation furnace, a hopper, a spiral material rod, a venturi tube, and a fan, the activation furnace is fixedly installed on the right side of the carbonization system, and the hopper is fixedly installed on the top of the activation furnace.

[0011] As a preferred embodiment of the present invention, the spiral material rod is movably installed on the right side of the hopper, the venturi tube is fixedly installed on the front side of the activation furnace, and the fan is fixedly installed on the end of the venturi tube away from the activation furnace.

[0012] The beneficial effects of the utility model are:

[0013] 1. This activated carbon preparation device for cyanobacteria based on cracking and carbonization, by mixing and stirring sludge and cyanobacteria in a certain proportion, conveying them to a dryer, drying them to reduce their moisture content to below 30%, and then cracking, carbonizing and activating the dried mixture, and preparing it into high-quality carbon adsorption material through carbonization and activation technology. Making sludge and cyanobacteria into activated carbon shows certain advantages in efficient energy utilization, resource utilization, greenhouse gas emission reduction, etc., and solves the problems of serious secondary pollution and limited use conditions.

[0014] 2. The activated carbon preparation device for cyanobacteria based on cracking and carbonization, through the setting of a dryer, is convenient for high-temperature drying treatment of mixed wet materials, thereby realizing the drying treatment of wet cyanobacteria and obtaining dry cyanobacteria with a low water content. It has high processing efficiency, low energy consumption, and small investment in dispersed equipment, and effectively helps to achieve the reduction, harmlessness, stabilization, and resource utilization of cyanobacteria. Through the setting of an activation furnace, it is convenient to chemically condition the biochar produced after the carbonization is completed and enter the activation furnace, and use water vapor, flue gas and other oxygen-containing gases as activators, and contact with carbon at high temperature to cause redox reaction for activation, and achieve the purpose of forming pores in the carbon particles through the gasification reaction of carbon, further deepen and penetrate the pores, and form more small pores and micropores, thereby preparing high-quality activated carbon with developed pores and excellent adsorption performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure provided by an embodiment of the utility model;

[0016] Figure 2 It is a partial structural schematic diagram provided by an embodiment of the utility model;

[0017] Figure 3 It is an exploded diagram of the dryer structure provided by the embodiment of the utility model;

[0018] Figure 4 It is a schematic diagram of the structure of a pyrolysis carbonization furnace provided in an embodiment of the utility model;

[0019] Figure 5 It is a schematic diagram of the activation system structure provided by an embodiment of the utility model.

[0020] Explanation of the markings in the figure: 1. Drying system; 101. Drying machine; 102. Mixer; 103. First discharge bin; 104. Crusher; 105. Steam pipe bundle; 106. First connecting pipe; 107. First discharge valve; 108. First discharge pump; 109. Second connecting pipe; 1010. Second discharge valve; 1011. Second discharge pump; 1012. Air cooler; 1013. Second discharge bin; 2. Carbonization system; 201. Pyrolysis carbonization furnace; 202. Feed inlet; 203. Furnace door; 204. Air inlet pipe; 3. Activation system; 301. Activation furnace; 302. Hopper; 303. Screw rod; 304. Venturi tube; 305. Fan; 4. First conveyor belt; 5. Second conveyor belt. DETAILED DESCRIPTION

[0021] The present invention will now be further described in detail in conjunction with the accompanying drawings and preferred embodiments. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0022] like Figures 1 to 5 As shown, the utility model provides an activated carbon preparation device for cyanobacteria based on pyrolysis and carbonization, including a drying system 1, a carbonization system 2 and an activation system 3. The carbonization system 2 is fixedly installed on the right side of the drying system 1, and the activation system 3 is fixedly installed on the right side of the carbonization system 2. The drying system 1 includes a dryer 101, a mixer 102, a first discharge bin 103, a pulverizer 104 and a steam pipe bundle 105. The dryer 101 is fixedly installed on the left side of the carbonization system 2, the mixer 102 is fixedly installed on the left side of the dryer 101, the first discharge bin 103 is fixedly installed on the top of the mixer 102, the pulverizer 104 is fixedly installed on the right side of the dryer 101, and the steam pipe bundle 105 is fixedly installed in the inner cavity of the dryer 101.

[0023] refer to Figure 1 , Figure 2 and Figure 4 The dryer 101 and the pulverizer 104 are connected through a first connecting pipe 106, a first discharge valve 107 is fixedly installed on the right side of the first connecting pipe 106, a first discharge pump 108 is fixedly installed on the front side of the first discharge valve 107, a second connecting pipe 109 is fixedly installed on the right side of the pulverizer 104, a second discharge valve 1010 is fixedly installed on the right side of the second connecting pipe 109, a second discharge pump 1011 is fixedly installed on the front side of the second discharge valve 1010, and an air cooler 1 is fixedly installed on the right side of the second discharge pump 1011 012, a second discharge bin 1013 is fixedly installed on the right side of the air cooler 1012, and a first conveyor belt 4 is fixedly installed on the bottom of the second discharge bin 1013. The carbonization system 2 includes a pyrolysis carbonization furnace 201, a feed port 202, a furnace door 203, and an air inlet pipe 204. The pyrolysis carbonization furnace 201 is fixedly installed on the right side of the drying system 1, and the feed port 202 is opened on the left side of the pyrolysis carbonization furnace 201. The furnace door 203 is movably installed in the inner cavity of the feed port 202, and the air inlet pipe 204 is fixedly installed on the top of the pyrolysis carbonization furnace 201.

[0024] The above scheme is adopted: through the setting of the dryer 101, it is convenient to carry out high-temperature drying treatment on the mixed wet material, thereby realizing the drying treatment of wet cyanobacteria, obtaining dry cyanobacteria with a low water content, with high processing efficiency, low energy consumption, small investment in dispersed equipment, and effectively contributing to the reduction, harmlessness, stabilization and resource utilization of cyanobacteria.

[0025] refer to Figure 1 , Figure 2 and Figure 5The activation system 3 and the carbonization system 2 are connected by a second conveyor belt 5. The activation system 3 includes an activation furnace 301, a hopper 302, a spiral rod 303, a venturi tube 304, and a fan 305. The activation furnace 301 is fixedly installed on the right side of the carbonization system 2, the hopper 302 is fixedly installed on the top of the activation furnace 301, the spiral rod 303 is movably installed on the right side of the hopper 302, the venturi tube 304 is fixedly installed on the front side of the activation furnace 301, and the fan 305 is fixedly installed on the end of the venturi tube 304 away from the activation furnace 301.

[0026] The above scheme is adopted: through the setting of the activation furnace 301, the biochar produced after the carbonization is completed is conveniently chemically conditioned and enters the activation furnace 301, and oxygen-containing gases such as water vapor and flue gas are used as activators to contact with the carbon at high temperature to cause redox reaction for activation, and the purpose of forming pores in the carbon particles is achieved through the gasification reaction of carbon, and the pores are further deepened and penetrated to form more small pores and micropores, thereby preparing high-quality activated carbon with developed pores and excellent adsorption performance.

[0027] Working principle:

[0028] When in use, the sludge and wet blue algae are discharged into the first discharge bin 103 in a certain proportion, and then transported to the mixer 102 through the first discharge bin 103. The sludge and wet blue algae are evenly mixed in the mixer 102 at room temperature, and then the mixed wet materials are transported to the dryer 101 through the first discharge pump 108. The mixed wet materials are continuously stirred in the dryer 101 and heat is exchanged with the steam tube bundle 105. 155-190°C steam is introduced into the steam tube bundle 105. The mixed wet material is pushed toward the outlet of the dryer 101 while being stirred and heat exchanged. The moisture content of the mixed wet material is 75% to 95%. After drying, a 6% to 15% high-temperature dry material is formed and conveyed to the right pulverizer 104 for pulverization. The pulverized high-temperature dry material is air-cooled by the air cooler 1012, thereby achieving the drying treatment of the sludge and wet blue algae. The dried algae mud is conveyed to the pyrolysis carbonization furnace 201 through the first conveyor belt 4. The algae mud is heated in the high-temperature oxygen-free atmosphere. In this case, the low-boiling point and volatile substances are evaporated, while the organic matter is retained in the form of solid carbon. During the cracking process, the toxic and harmful high-molecular organic substances undergo a series of reactions, causing them to decompose and escape as small molecular substances. This not only solves the problem of harmful substances, but also can recycle heat and save energy. In addition, the heavy metal ions in the algae mud are combined with the solidified carbon with stable chemical bonds. The heavy metal ions are transformed from the original extractable state to a stable state, which makes it difficult to separate from the carbon, so that they cannot be leached into the environment and no secondary pollution is generated. The carbon material after pyrolysis and carbonization enters the activation furnace 301 from the hopper 302, and is transported to the discharge end of the activation furnace 301 along the axial direction of the activation furnace 301 under the rotation of the spiral rod 303. The purpose of forming holes in the carbon particles is achieved through the gasification reaction of the carbon, and the pores are further deepened and penetrated to form more small pores and micropores, thereby preparing high-quality activated carbon with developed pores and excellent adsorption properties.

[0029] In summary: the activated carbon preparation device for cyanobacteria based on cracking and carbonization, through the coordinated use of drying system 1, carbonization system 2 and activation system 3, solves the problem that algae removal technology is a technology that uses physical means such as machinery or engineering to control cyanobacterial blooms, including artificial salvage technology, water dilution technology, shading technology, aeration technology, ultrasonic algae removal technology, etc. Physical algae removal technology can achieve rapid removal of cyanobacterial blooms on the surface of lakes and reservoirs, and has less negative impact on the water environment. Since some technologies are affected by water conditions and have a limited treatment range, it is often necessary to use a combination of multiple methods to control cyanobacterial blooms. In addition, physical methods are costly and incomplete.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device;

[0031] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents;

[0032] The above description only describes the specific implementation methods of the utility model. Various examples do not limit the essential content of the utility model. Ordinary technicians in the relevant technical field can modify or deform the specific implementation methods described above after reading the description without departing from the essence and scope of the utility model.

Claims

1. A device for preparing activated carbon for cyanobacteria based on pyrolysis and carbonization, comprising a drying system (1), a carbonization system (2) and an activation system (3), characterized in that: The right side of the drying system (1) is fixedly mounted with a carbonization system (2), and the right side of the carbonization system (2) is fixedly mounted with an activation system (3). The drying system (1) comprises a drying machine (101), a mixer (102), a first discharge bin (103), a pulverizer (104) and a steam pipe bundle (105). The drying machine (101) is fixedly mounted on the left side of the carbonization system (2), the mixer (102) is fixedly mounted on the left side of the drying machine (101), the first discharge bin (103) is fixedly mounted on the top of the mixer (102), the pulverizer (104) is fixedly mounted on the right side of the drying machine (101), and the steam pipe bundle (105) is fixedly mounted in the inner cavity of the drying machine (101).

2. The device for preparing activated carbon for cyanobacteria based on pyrolysis and carbonization according to claim 1, characterized in that: The dryer (101) and the pulverizer (104) are connected via a first connecting pipe (106), a first discharge valve (107) is fixedly installed on the right side of the first connecting pipe (106), and a first discharge pump (108) is fixedly installed on the front side of the first discharge valve (107).

3. The device for preparing activated carbon for cyanobacteria based on pyrolysis and carbonization according to claim 1, characterized in that: A second connecting pipe (109) is fixedly installed on the right side of the pulverizer (104), a second discharge valve (1010) is fixedly installed on the right side of the second connecting pipe (109), a second discharge pump (1011) is fixedly installed on the front side of the second discharge valve (1010), an air cooler (1012) is fixedly installed on the right side of the second discharge pump (1011), a second discharge bin (1013) is fixedly installed on the right side of the air cooler (1012), and a first conveyor belt (4) is fixedly installed on the bottom of the second discharge bin (1013).

4. The device for preparing activated carbon for cyanobacteria based on pyrolysis and carbonization according to claim 1, characterized in that: The carbonization system (2) comprises a pyrolysis carbonization furnace (201), a material inlet (202), a furnace door (203), and an air inlet pipe (204); the pyrolysis carbonization furnace (201) is fixedly installed on the right side of the drying system (1).

5. The device for preparing activated carbon for cyanobacteria based on pyrolysis and carbonization according to claim 4, characterized in that: The feed inlet (202) is opened on the left side of the pyrolysis carbonization furnace (201), the furnace door (203) is movably installed in the inner cavity of the feed inlet (202), and the air inlet pipe (204) is fixedly installed on the top of the pyrolysis carbonization furnace (201).

6. The device for preparing activated carbon for cyanobacteria based on pyrolysis and carbonization according to claim 1, characterized in that: The activation system (3) and the carbonization system (2) are connected via a second conveyor belt (5); the activation system (3) comprises an activation furnace (301), a hopper (302), a spiral material rod (303), a venturi tube (304), and a fan (305); the activation furnace (301) is fixedly installed on the right side of the carbonization system (2); and the hopper (302) is fixedly installed on the top of the activation furnace (301).

7. The device for preparing activated carbon for cyanobacteria based on pyrolysis and carbonization according to claim 6, characterized in that: The spiral material rod (303) is movably installed on the right side of the hopper (302), the venturi tube (304) is fixedly installed on the front side of the activation furnace (301), and the fan (305) is fixedly installed on the end of the venturi tube (304) away from the activation furnace (301).

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