CN210065656U

CN210065656U - Wood vinegar producing and purifying device

Info

Publication number: CN210065656U
Application number: CN201920386967.6U
Authority: CN
Inventors: 王晓; 周建云; 覃青青
Original assignee: Guizhou University
Current assignee: Guizhou University
Priority date: 2019-03-26
Filing date: 2019-03-26
Publication date: 2020-02-14
Anticipated expiration: 2029-03-26

Abstract

The utility model provides a pyrolkigneous liquid production purification device, includes spiral rubbing crusher, spiral retort, spiral discharge machine, draught fan, first condenser, second condenser and gas filter, its characterized in that: a pyroligneous liquor recovery tank is arranged below the second condenser, the pyroligneous liquor recovery tank is communicated with the air inlet of the first condenser through a conduit, and a conduit branch conduit between the pyroligneous liquor recovery tank and the air inlet of the first condenser is communicated with a secondary distillation wood tar recovery tank; the guide pipe is provided with a reheating device; a control valve is arranged on a conduit between the reheating device and the pyroligneous liquor recovery tank, and an air valve is arranged on the branch conduit. The reheating device comprises a water vapor inlet, a steam heating pipe and a water valve. The first condenser is identical to the second condenser in structure and comprises an air inlet pipe, a condenser main body, a circulating water inlet pipe, a circulating water outlet pipe, a temperature sensor and a cooling pipe bundle.

Description

Wood vinegar producing and purifying device

Technical Field

The utility model belongs to the technical field of carbomorphism equipment, concretely relates to utilize device of crop straw production purification pyrolkigneous liquid.

Background

Under the condition of oxygen deficiency or low oxygen content, the raw materials such as crop straws and the like are heated to generate degradation reaction, a large amount of pyroligneous liquor is generated, and byproducts comprise: wood tar, charcoal, wood gas, and the like. The wood vinegar is a natural plant material with wide application, and is mainly used for preventing and treating plant diseases and insect pests, spraying on the leaves of crops, improving soil, protecting human body health and the like. At the present stage of China, the wood vinegar is prepared by mainly adopting a standing separation method and a distillation method, the two methods have low efficiency, and the obtained wood vinegar has low purity and is difficult to utilize. Therefore, there is a need for an apparatus for efficiently producing high-purity pyroligneous acid.

Patent No. 201620113110.3 provides a pyroligneous liquor dry distillation device, simple structure, convenient operation and effectively utilized the crop straw resources. However, the method has a plurality of defects in the preparation of the wood vinegar, and the wood vinegar prepared by the method has low purity, cannot be directly applied and still needs to be further processed, thereby increasing the cost.

Disclosure of Invention

The utility model provides a device for purifying pyroligneous liquor, which purifies pyroligneous liquor when the pyroligneous liquor is produced, and has low cost and can obtain high-purity pyroligneous liquor which can be directly applied.

The problem is solved by following technical scheme:

a pyroligneous production and purification device comprises a spiral crusher, a spiral retort and a spiral discharging machine which are sequentially connected through pipelines, and further comprises a draught fan, a first condenser, a second condenser and a flue gas filter which are sequentially connected through pipelines, wherein the draught fan is connected with the spiral retort through a pipeline, a pyroligneous recovery tank is arranged below the second condenser, the pyroligneous recovery tank is communicated with an air inlet of the first condenser through a conduit, and a conduit branch conduit between the pyroligneous recovery tank and the air inlet of the first condenser is communicated with a secondary distillation wood tar recovery tank; the guide pipe is also provided with a reheating device; the conduit passes through the reheating device before being branched out of the branch conduit.

Preferably, the reheating device is a hot steam heating device.

Preferably, the reheating device comprises a water vapor inlet, a steam heating pipe and a water valve; the reheating device adopts a hot steam heating scheme, the heating temperature can be controlled below 90 ℃, main impurities of the pyroligneous liquor comprise heavy tar and light tar, the boiling points of the heavy tar and the light tar are both above 100 ℃, and the tar and the pyroligneous liquor can be effectively separated through steam heating.

Preferably, a control valve is arranged on a conduit between the reheating device and the pyroligneous liquor recovery tank.

Preferably, the branch conduit is provided with a gas valve.

Preferably, the condenser includes intake pipe, condenser main part, circulating water inlet pipe, circulating water outlet pipe, temperature sensor and cooling tube bank. The circulating speed of the circulating water is adjusted through a temperature sensor degree feedback value, so that the temperature at the outlet of the first condenser is controlled to be about 100 ℃, and the temperature at the outlet of the second condenser is controlled to be below 30 ℃. Thus, the collection of the pyroligneous liquor can be ensured.

The utility model utilizes the different boiling points of the pyroligneous liquor and the impurities to obtain the pyroligneous liquor with higher purity through repeated distillation. The utility model discloses simple structure, it is with low costs and the equipment is convenient, and the pyroligneous purity of collecting simultaneously is high, can directly use.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

FIG. 2 is a schematic view of the structure of the reheating apparatus.

Fig. 3 is a schematic view of the structure of the condenser.

The parts in the figures are numbered: 1-a spiral crusher; 2-spiral retort; 3-a spiral discharging machine; 4-a draught fan; 5-a first condenser; 6-a second condenser; 7-a flue gas filter; 8, a motor; 9-rotating blades; 10-a rotating shaft; 11-a wood tar recovery tank; 12-pyroligneous liquor recovery tank; 13-air return valve; 14. a tail gas absorption valve; 15-a combustion chamber; 16-a flue gas channel; 17-a gas valve; 18-secondary distillation wood tar recovery tank; 19-reheating means; 20-control valve; 21-water vapor inlet; 22-wood vinegar containing impurities; 23-pyroligneous liquor vapor containing impurities; a 24-water valve; 25-steam heating pipe; 26-an air inlet pipe; 27-a temperature sensor; 28-a condenser body; 29-circulating water inlet pipe; 30-a circulating water outlet pipe; 31-a cooling tube bundle; 32-air outlet pipe.

Detailed Description

The following describes in detail embodiments of the present invention with reference to the drawings.

Referring to fig. 1, a device for producing pyroligneous by using crop straws comprises a spiral crusher 1, a spiral retort 2, a spiral discharging machine 3, an induced draft fan 4, a first condenser 5, a second condenser 6 and a flue gas filter 7, wherein the spiral crusher 1, the spiral retort 2 and the spiral discharging machine 3 are sequentially connected through a pipeline, and the spiral retort 2, the induced draft fan 4, the first condenser 5, the second condenser 6 and the flue gas filter 7 are sequentially connected through a pipeline. The discharge hole of the spiral crusher 1 is connected with the feed inlet of the spiral retort 2, and the feed inlet of the spiral discharging machine 3 is connected with the discharge hole of the spiral retort 2. The spiral gas retort 2 is provided with a combustion chamber 15, the combustion chamber 15 is provided with a flue gas channel 16, the combustion chamber 15 is communicated with the furnace body of the spiral gas retort 2 through the flue gas channel 16, a motor 8 is arranged outside the spiral gas retort 2, a rotating shaft 10 is arranged in the spiral gas retort 2, the rotating shaft 10 is welded with a rotating blade 9, and the rotating shaft 10 is connected to the motor 8 through a transmission rod. The lower end of the first condenser is provided with a wood tar recovery tank 11, and the lower end of the second condenser 6 is provided with a wood vinegar recovery tank 12.

The pyroligneous liquor recovery tank 12 is led out by a guide pipe, a reheating device 19 is arranged on the guide pipe, and the reheating device 19 comprises a water vapor inlet 21, a water valve 24 and a steam heating pipe 25. The conduit is respectively connected with a first condenser air inlet 26 and a secondary distillation wood tar recovery tank 18 after passing through a reheating device 19, a control valve 20 is arranged between the reheating device 19 and the wood vinegar recovery tank 12 for controlling the flow of wood vinegar, and an air valve 17 is arranged between the reheating device 19 and the secondary distillation wood tar recovery tank 18 for controlling the flow of wood vinegar vapor 23 containing impurities.

The first condenser 5 and the second condenser 6 have the same structure and comprise: an air inlet pipe 26, a temperature sensor 27, a condenser main body 28, a cooling pipe bundle 31, a circulating water inlet pipe 29, a circulating water outlet pipe 30 and an air outlet pipe 32; a tail gas absorption valve 14 is arranged on a pipeline between the flue gas filter 7, a branch pipeline on a pipeline between the tail gas absorption valve 14 and the second condenser 6 is connected with a combustion chamber 15 on the spiral gas retort 2, and a return air valve 13 is arranged on a branch pipeline on a pipeline between the tail gas absorption valve 14 and the condenser 6.

The utility model discloses a work like this: the motor 8, the draught fan 4, the spiral crusher 1 and the spiral discharging machine 3 are started, the air return valve 13 is opened, the tail gas absorption valve 14 is closed, the air valve 17 is closed, the combustion chamber 15 is ignited, crop straws are continuously added into the spiral crusher 1, the crop straws are crushed and enter the spiral retort 2, the temperature of air in the combustion chamber 15 rises rapidly at the moment, the flue gas enters the spiral retort 2 through the flue gas channel, and the flue gas and the crop straws are in countercurrent contact in the spiral retort 2, so that the crop straws are subjected to dry distillation.

The product is introduced into a distillation device by a draught fan 4 along with the smoke, a part of wood tar is separated and recovered by primary condensation of a first condenser 5, the temperature of an air outlet pipe of the first condenser 5 is controlled to be about 100 ℃, wood vinegar containing impurities is obtained by secondary separation of a second condenser 6, the temperature of an air outlet pipe of the first condenser 5 is controlled to be below 30 ℃, after the wood vinegar recovery tank 12 collects wood vinegar containing impurities 22 to a certain degree, a control valve 20 is opened, and the wood vinegar containing impurities is repeatedly distilled by a reheating device 19.

The residual wood gas after secondary condensation returns to the combustion chamber 15 for combustion, and the generated carbon is discharged through the spiral discharging machine 3.

Extinguishing the combustion chamber 15 at the end of the section; closing the control valve 20, and opening the gas valve 17 to make the tar impurities enter the recovery tank 18; and (3) closing the air return valve 13, opening the tail gas absorption valve 14, discharging the flue gas into the air after the flue gas is treated by the flue gas filter 7, closing all equipment when the temperature of the gas in the spiral gas retort 2 is reduced to below 50 ℃, and simultaneously collecting the pyroligneous liquor in the pyroligneous liquor recovery tank 12 to obtain the refined pyroligneous liquor with the pH value of 1.5-3.37 and the density of more than 1.001 g/ml.

The utility model utilizes the dry distillation process to dry distill the crop straws into a large amount of pyroligneous liquor, and simultaneously, wood tar, charcoal and wood gas are also generated; the device effectively collects the wood tar and the carbon, and simultaneously repeatedly distills the wood vinegar liquid, and the generated wood gas returns to the combustion chamber for combustion, thereby reducing the fuel consumption, avoiding air pollution, having low cost, and obtaining the wood vinegar liquid with high purity and less impurities.

Claims

1. The utility model provides a pyrolkigneous liquid production purification device, includes spiral rubbing crusher, spiral retort and the spiral ejection of compact machine that connects gradually through the pipeline, still includes draught fan, first condenser, second condenser and the gas filter that connects gradually through the pipeline, the draught fan passes through the tube coupling spiral retort, its characterized in that:

a pyroligneous liquor recovery tank is arranged below the second condenser, the pyroligneous liquor recovery tank is communicated with the air inlet of the first condenser through a conduit, and a conduit branch conduit between the pyroligneous liquor recovery tank and the air inlet of the first condenser is communicated with a secondary distillation wood tar recovery tank; the guide pipe is also provided with a reheating device; the conduit passes through the reheating device before being branched out of the branch conduit.

2. The pyroligneous liquor producing and purifying apparatus as claimed in claim 1, wherein said reheating means is a hot steam heating means.

3. The pyroligneous liquor producing purification apparatus as claimed in claim 2, wherein said hot steam heating means comprises a steam inlet, a steam heating pipe and a water valve.

4. The apparatus for producing and purifying pyroligneous liquor as claimed in claim 1, wherein a control valve is provided in a conduit between said reheating apparatus and said pyroligneous liquor recovery tank.

5. The apparatus for producing and purifying pyroligneous liquor as claimed in claim 1, wherein said branch conduit is provided with a gas valve.

6. The wood vinegar producing and purifying apparatus of claim 1, wherein the condenser comprises an intake pipe, a condenser body, a circulating water inlet pipe, a circulating water outlet pipe, a temperature sensor and a cooling pipe bundle.