CN-121609339-B - Green preparation method and device of modified activated carbon

CN121609339BCN 121609339 BCN121609339 BCN 121609339BCN-121609339-B

Abstract

The invention relates to the technical field of activated carbon preparation, in particular to a green preparation method and device of modified activated carbon. The preparation device comprises a base, a carbonization assembly and an activation assembly, wherein raw materials for preparing the activated carbon reach a transfer cavity after being carbonized by the carbonization assembly and are transported into the inner cylinder by the spiral conveying piece for activation. The invention realizes the coaxial combination of the two working procedures according to the characteristics of carbonization and activation temperature, realizes the integration of heat sources on the basis of ensuring the uniform temperature distribution of the two working procedures, effectively reduces heat loss, realizes the automatic switching of the two working procedures by utilizing the transfer cavity, reduces the labor and equipment investment for transferring the working procedures, and has the continuity of processing and high automation degree compared with the prior art that the same equipment only utilizes the change of processing conditions to realize the switching of the working procedures.

Inventors

YANG ZAIHUA
LIN ZHIQI
XIAO JIANBO
ZHENG QIUPING
CHEN WEIBIAO
PENG GUOBIAO
YANG YAJING
CHEN MINGYI

Assignees

厦门爱迪特环保科技有限公司

Dates

Publication Date: 20260508
Application Date: 20260203

Claims (9)

1. The preparation device for the modified activated carbon is characterized by comprising a base, a carbonization assembly, an activation assembly and an upward shifting assembly, wherein the carbonization assembly comprises a fixed cylinder, a rotary cylinder, a top plate, a spiral plate and a first driving assembly, the activation assembly comprises an inner cylinder and a spiral conveying member, a transfer cavity is arranged in the base, the fixed cylinder is obliquely arranged on the base, an outlet I is arranged on the side wall of the fixed cylinder, which is arranged in the transfer cavity, the spiral plate is coaxially arranged in the rotary cylinder, one side of the spiral plate is fixedly connected with the inner side wall of the rotary cylinder, one side of the rotary cylinder is rotatably arranged in the fixed cylinder, the bottom of the spiral plate is inserted into the fixed cylinder and corresponds to the outlet I, and the first driving assembly is connected with the rotary cylinder and drives the rotary cylinder to rotate; The inner cylinder and the spiral plate are coaxially arranged and fixedly connected with the bottom of the fixed cylinder, two ends of the inner cylinder respectively extend out of the bottom of the fixed cylinder and the top of the rotary cylinder, the top plate is fixedly arranged on the outer ring of the inner cylinder and is rotationally connected with the top of the rotary cylinder, the spiral conveying piece is arranged in the inner cylinder, one end of the spiral conveying piece is provided with a third driving component fixedly arranged on the top of the inner cylinder, the other end of the spiral conveying piece extends out of the bottom of the inner cylinder and stretches into the transfer cavity, the top plate is provided with a first inlet for feeding the spiral plate, the top of the inner cylinder is provided with a second outlet, heating pipes are respectively arranged on the inner walls of the inner cylinder, the rotary cylinder and the fixed cylinder in a surrounding manner, the fixed cylinder is communicated with a first air inlet pipe, and the inner cylinder is communicated with a second air inlet pipe for raw material for preparing activated carbon after being carbonized by the carbonization component to reach the transfer cavity and is transported into the inner cylinder for activation by the spiral conveying piece; The transfer cavity is semi-cylindrical, the upper shifting assembly comprises a second driving assembly, a rotating rod, a connecting rod and baffle plates, the two second driving assemblies are respectively arranged on two sides of the transfer cavity, the rotating rod is arranged in the transfer cavity, the second driving assembly penetrates through the side wall of the transfer cavity to be connected with the rotating rod, the connecting rod is arranged on one end, close to the transfer cavity, of the rotating rod, a plurality of baffle plates are fixedly connected with the connecting rod and incline along the radial direction of the transfer cavity, and the rotating rod is started to rotate so that the baffle plates pass through the first outlet and the spiral conveying piece to realize particle distribution in the transfer cavity.
2. The device for preparing modified activated carbon as claimed in claim 1, wherein a plurality of baffle plates are arranged in parallel on the connecting rod, a movable plate is arranged between adjacent baffle plates, one side of the movable plate is rotatably connected with one baffle plate, and the rotatable angle of the movable plate is not more than 90 degrees.
3. The device for preparing modified activated carbon according to claim 1, wherein two arc-shaped sliding rails are symmetrically arranged at the top of the base, the second driving assembly is positioned in the middle of the rotating rod, the roller I is arranged at the other end of the rotating rod, and the other end of the rotating rod penetrates through the top of the base and enables the roller I to be abutted against the sliding rails.
4. The device for preparing modified activated carbon according to claim 3, wherein the upper pulling component further comprises a rebound group, the rebound group mainly comprises two rebound rods, one ends of the rebound rods are provided with a roller II, the other ends of the two rebound rods are rotationally connected and sleeved on the connecting rod, a reset spring is arranged at the joint of the two rebound rods, and the reset spring gives an acting force for the roller II on the rebound rod to be abutted against the inner wall of the transfer cavity.
5. The device for preparing modified activated carbon according to claim 1, wherein the first air inlet pipe is arranged on the side wall of the fixed cylinder and is used for conveying nitrogen, the second air inlet pipe is arranged on the side wall of the inner cylinder and is positioned above the top plate and is used for conveying carbon dioxide.
6. The apparatus for preparing modified activated carbon according to claim 1, wherein the first driving assembly comprises a toothed ring and a gear set, the gear set is fixedly arranged on the side wall of the fixed cylinder, and the toothed ring is arranged on the outer ring of the rotary cylinder and is meshed with the gear set for transmission.
7. The apparatus for producing modified activated carbon as claimed in claim 2, wherein the baffle plate is provided with a projection on a side thereof adjacent to the movable plate.
8. A green preparation method of modified activated carbon, characterized in that the preparation device based on the modified activated carbon of any one of claims 1-7 comprises the following specific steps: s1, introducing nitrogen into a first air inlet pipe in a preparation device to replace oxygen in the device, and then starting a second air inlet pipe to convey carbon dioxide into an inner cylinder; S2, enabling bark particles to enter a preparation device from an inlet I, setting the heating temperature in a fixed cylinder and a rotary cylinder to be 800 ℃, setting the heating temperature in an inner cylinder to be 850 ℃, setting the rotating speed of the rotary cylinder to ensure that the movement time of the bark particles along a spiral plate is not less than 2 hours, and realizing carbonization of the bark particles; S3, accumulating carbonized bark particles in the transfer cavity, entering the inner cylinder under the rotation of the spiral conveying piece, and controlling the rotation speed of the spiral conveying piece to ensure that the transportation time of the carbonized bark particles along the spiral conveying piece is between 0.5h and 2h, so as to realize the first activation of the bark particles; and S4, collecting bark particles discharged from the second outlet after the first activation, cooling to room temperature, washing with water, drying, spraying hydrochloric acid for secondary activation, and finally drying again to obtain the finished modified activated carbon.
9. The green process for producing modified activated carbon according to claim 8, characterized in that the concentration of the hydrochloric acid is 0.5mol/L to 1.5mol/L.

Description

Green preparation method and device of modified activated carbon Technical Field The invention relates to the technical field of activated carbon preparation, in particular to a green preparation method and device of modified activated carbon. Background In the preparation process for preparing the activated carbon by taking bark particles as raw materials, carbonization treatment and activation treatment are needed to be carried out on the raw materials successively, the contents of the two treatment procedures are close, but the required environment temperature and the required gas atmosphere are different, and corresponding carbonization furnaces and activation furnaces are arranged for step-by-step treatment in the prior art, so that the required areas of transferring steps and using sites are increased, heat redundancy is caused, and the production cost is increased. Disclosure of Invention The invention aims to overcome the defects and provide a green preparation method and device of modified activated carbon, which have the advantages of more energy conservation and environmental protection. The invention provides a preparation device of modified activated carbon, which comprises a base, a carbonization assembly and an activation assembly, wherein the carbonization assembly comprises a fixed cylinder, a rotary cylinder, a top plate, a spiral plate and a first driving assembly, the activation assembly comprises an inner cylinder and a spiral conveying member, a transfer cavity is arranged in the base, the fixed cylinder is obliquely arranged on the base, an outlet I is formed in the side wall of the transfer cavity on the fixed cylinder, the spiral plate is coaxially arranged in the rotary cylinder, one side of the spiral plate is fixedly connected with the inner side wall of the rotary cylinder, one side of the rotary cylinder is rotatably arranged in the fixed cylinder, the bottom of the spiral plate is inserted into the fixed cylinder and corresponds to the outlet I, the first driving assembly is connected with the rotary cylinder and drives the rotary cylinder to rotate, the inner cylinder and the spiral plate are coaxially arranged and fixedly connected with the bottom of the fixed cylinder, two ends of the inner cylinder extend out of the bottom of the fixed cylinder and the top of the rotary cylinder respectively, the top plate is fixedly arranged on the outer ring of the inner cylinder and is rotatably connected with the top of the rotary cylinder, one end of the spiral conveying member is fixedly arranged on the top of the inner cylinder, the other end of the spiral conveying member is fixedly arranged on the inner cylinder, the inner cylinder is fixedly arranged on the bottom of the top of the inner cylinder, the spiral conveying member, the bottom of the spiral conveying member is fixedly extends out of the bottom of the spiral cylinder from the bottom of the spiral plate, the bottom plate and is fixedly connected with the top of the inner cylinder, and is communicated with the inlet pipe through the inlet pipe, and is communicated with the inlet pipe, and the active carbon, and is communicated with the inlet pipe. Further, the preparation facilities still includes and dials the subassembly, this transfer chamber is semi-cylindrical, should dial the subassembly and include second drive assembly, the bull stick, connecting rod and separation blade, two second drive assembly locate the both sides in transfer chamber respectively, this bull stick is located in this transfer chamber, this second drive assembly passes the lateral wall in this transfer chamber and is connected with this bull stick, this connecting rod is located the one end that is close to the transfer chamber on this bull stick, a plurality of this separation blade and this connecting rod fixed connection and its radial slope along the transfer chamber, start this bull stick rotation and make the separation blade pass through export one and screw conveyer, realize the granule distribution in the transfer chamber. Further, a plurality of baffle plates are arranged in parallel on the connecting rod, a movable plate is arranged between the adjacent baffle plates, one side of the movable plate is rotationally connected with one baffle plate, the rotatable angle of the movable plate is not more than 90 degrees, when the rotating rod approaches the spiral conveying piece, the included angle between the movable plate and the baffle plate is the largest, and when the rotating rod approaches the spiral conveying piece, the included angle between the movable plate and the baffle plate is the smallest. Further, two arc-shaped sliding rails are symmetrically arranged at the top of the base, the second driving assembly is located in the middle of the rotating rod, the first roller is arranged at the other end of the rotating rod, and the other end of the rotating rod penetrates through the top of the base and enables the first roller to be