CN215175111U - Device for destroying paper confidential documents - Google Patents
Device for destroying paper confidential documents Download PDFInfo
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- CN215175111U CN215175111U CN202120483018.7U CN202120483018U CN215175111U CN 215175111 U CN215175111 U CN 215175111U CN 202120483018 U CN202120483018 U CN 202120483018U CN 215175111 U CN215175111 U CN 215175111U
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Abstract
The utility model belongs to the technical field of relate to secret file processing, specifically be a device of destroying paper relate to secret file. The utility model discloses the device includes: the high-temperature treatment room is used for treating the paper confidential documents; the nitrogen working medium generator is used for providing inert working medium protection conditions for the high-temperature treatment chamber; the heater is used for providing high-temperature carbonization energy for the high-temperature treatment chamber; the high-temperature filtering device is used for filtering and intercepting dust possibly existing in the high-temperature treatment chamber; a paper crushing mechanism for further crushing the carbonized paper; and the control assembly is used for controlling the temperature and the oxygen content in the treatment room and starting, stopping and controlling the sub-equipment. In the device, the oxygen content in the high-temperature treatment chamber is controlled to be below 16.2 percent, the temperature is controlled to be 300-800 ℃, and paper can be completely carbonized. And the carbonized paper powder is flushed into a sewer. The device of the utility model is simple in structure, it is quick to handle, and the paper is concerning secret file and is destroyed thoroughly.
Description
Technical Field
The utility model belongs to the technical field of the file processing that involves secretly, concretely relates to destroy device of paper file that involves secretly.
Background
A large number of confidential documents of confidential units such as national defense and military, foreign exchange, confidential matters, government organs and the like, even enterprises, need to be destroyed, and the purpose of the destruction is to ensure that secret information recorded by a confidential carrier cannot be recovered.
At present, most of confidential document papers adopt a centralized destruction mode, and centralized processing comprises the following steps: the specially-assigned person is escorted to a boiler or an incinerator for incineration and sent to a pulp tank of a paper mill for pulping and destroying supervision; in addition, the method also has a treatment mode of field direct destruction, which comprises the following steps: high precision paper shredders, simple incinerators, and small size crushing beaters; the concentrated destruction mode is troublesome and greatly consumes manpower and material resources, in the methods of the former, most of the paper shredders crush the files into thin paper strips and paper scraps, the risk of recoverability exists, the simple incinerator has environmental protection problems of smoke treatment and the like, the small-sized crushing and beating treatment method has a series of problems of thick slurry, blockage, high equipment failure rate and the like, so that the confidential files are difficult to simply and effectively treat in real time on site, the destruction requirement of important confidential files is difficult to guarantee to be met, and a simpler and effective solution is urgently needed.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a device that is simple and effective and can thoroughly destroy paper confidential documents.
The utility model discloses a carry out high temperature carbonization to secret-related file (old and useless paper) under the inert gas protective atmosphere, be different from traditional incineration process, be a brand-new solution.
The utility model provides a destroy device of paper secret-related file, include:
(1) at least one high-temperature carbonization disposal chamber for accommodating paper classified documents to be disposed, at least one inlet for feeding the paper classified documents is provided, and the inlet is closable; the device is also provided with a port for feeding and discharging inert working medium, a crushing mechanism for crushing the carbide after disposal, a port for connecting a water supply, a port for feeding the paper powder after disposal and a cleaning water supply into a sewer, and an auxiliary heat-insulating material layer for reducing energy loss;
(2) the nitrogen working medium generator is connected with the inert working medium interface of the high-temperature treatment chamber and is used for providing inert working medium protection conditions for the high-temperature treatment chamber;
(3) the heater is used for heating the inert working medium output by the nitrogen working medium generator and providing high-temperature carbonization energy for the high-temperature carbonization treatment chamber;
(4) at least one high-temperature filtering device for intercepting dust possibly existing in the high-temperature carbonization treatment chamber, preferably a filtering mode capable of self-cleaning, such as a filtering device adopting a cross-flow filtering mode;
(5) the mechanism capable of further crushing the carbonized paper can be various types of crushing mechanisms and is used for further crushing the carbonized paper so as to conveniently discharge the carbonized paper into a sewer;
(6) accessories such as a pipeline, a valve, an interface and the like for accessing a water source are used for flushing carbonized paper powder into a sewer;
(7) the controller is used for controlling the temperature and the oxygen content in the high-temperature carbonization treatment chamber, and performing start-stop, control and other operations on each sub-device; the design of the control assembly is readily available to those skilled in the art and will not be described in detail.
The method for destroying the paper classified documents based on the device comprises the following specific steps:
(1) feeding the paper confidential documents to be processed into a high-temperature carbonization processing chamber from an inlet of the high-temperature carbonization processing chamber; closing the feed inlet;
(2) switching on a power supply, starting a nitrogen working medium generator, starting a heater, heating the nitrogen working medium output by the nitrogen working medium generator at a heating rate of 1-3 ℃ per minute, sending the heated nitrogen working medium into a high-temperature carbonization treatment chamber, and controlling the temperature of the high-temperature carbonization treatment chamber to be 300-800 ℃, preferably 300-500 ℃; meanwhile, the oxygen content in the high-temperature carbonization treatment chamber is controlled to be less than or equal to 16.2% by adjusting the flow of the nitrogen working medium until carbonization is finished;
(3) maintaining the oxygen content, filtering the excessive working medium and the dust possibly existing by a high-temperature filter, and then discharging the excessive working medium and the dust into a sewer;
(4) if the high-temperature filter is blocked during filtering, the high-temperature filter is self-cleaned after back flushing by adopting a nitrogen working medium;
(5) after the treatment is finished, the heater is turned off, and the heater is stopped;
(6) closing the nitrogen working medium generator, and stopping supplying the nitrogen working medium;
(7) starting a paper crushing mechanism, introducing a water source, and flushing carbonized paper powder into a sewer;
the disposal process is completed as described above.
The utility model discloses in, provide the heat source by the heater to take the heat source into high temperature carbonization room for the carrier with the inert working medium, about 300 ~ 800 ℃ under the protection of nitrogen gas working medium, more preferred will handle indoor secret file and carry out high temperature carbonization under 300 ~ 500 ℃ high temperature.
Because the high-temperature treatment chamber is protected by the nitrogen working medium, and the high-temperature treatment chamber continuously maintains a special normal-pressure low-oxygen environment with the oxygen content lower than 16.2 percent (v/v, volume percentage), the special normal-pressure low-oxygen environment can effectively inhibit the chain reaction in the combustion process, avoid open flame combustion and avoid the occurrence of a violent oxidation process; the paper in the disposal chamber is carbonized and cracked at high temperature only due to the high temperature generated by the heat source, and the working medium, the carbonized and cracked gas (mainly a small amount of methane, carbon monoxide and other gases) formed by cracking are filtered by the high-temperature filter and then directly discharged to a sewer together with the carbonized paper powder; the high-temperature filter can be self-cleaned by back flushing of a nitrogen working medium when the high-temperature filter is blocked after long-term operation, and the carbonized paper waste flows through the crushing treatment chamber, is crushed and then is connected to a water source to be flushed into a sewer so as to complete the whole treatment process.
The utility model discloses the device, simple structure handles fast, destroys thoroughly.
Drawings
Fig. 1 is a schematic structural diagram of the device of the present invention.
Reference numbers in the figures: the device comprises a paper feeding port 1, a working medium back-blowing access port of a nitrogen generator 2, a nitrogen generator 3, a heater 4, a high-temperature disposal chamber 5, a high-temperature filter 6, a water source access port 7, a crushing mechanism 8, a working medium discharge pipeline 9, a sewer pipeline 10, a sensing component 11 (temperature, oxygen content and the like detection sensing and the like), and a controller 12.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
The accompanying drawings are simplified schematic diagrams in which:
surrounding the high temperature treatment chamber 5, typically a container capable of withstanding high temperature conditions, including preferably but not necessarily thermal insulation means, the container being fed with the confidential paper to be destroyed from the paper feed port 1, the container being returned to a closed state after the paper is fed, the working nitrogen produced by the nitrogen generator 3, typically having a nitrogen content of about 95 to 99.99% nitrogen, being supplied with a flow rate designed to bring the heat energy produced by the heater 4 into the high temperature treatment chamber 5 at least for a certain period of time, and to create a "special atmospheric low oxygen environment" with an oxygen content of less than 16.2% (v/v, volume%) and sufficient energy to carbonize the paper to be destroyed in the high temperature treatment chamber 5.
As for the carbonization of confidential documents (waste paper carrying confidential information), the main components of the paper are plant cellulose and auxiliary materials such as fillers, sizing materials, dyes and the like brought by a papermaking process, the components are complex, and the high-temperature carbonization is realized to avoid the occurrence of oxidation reaction. It is known that the composition of combustion and explosion must have three elements simultaneously: combustion improver, combustible matter and energy source excitation, wherein:
oxidizer, i.e., oxidant, i.e., oxygen, normal air, i.e., containing about 21% (v/v) oxygen;
combustibles, all combustible substances, oil, carbonaceous materials, etc. of the target space;
the excitation energy, typically temperature or open flame, is mainly in the form of:
mechanical energy: such as friction, impact, adiabatic compression, shock waves;
heat energy: such as flame, hot gas, radiation;
electric energy: such as electrical sparks, arcs, static electricity;
light energy: heating with ultraviolet ray or infrared ray;
chemical energy: exothermic reactions such as decomposition, oxidation, polymerization; catalysts, and the like.
When the combustible is mixed with oxygen and exists in the excitation energy source, namely the three elements are simultaneously available, the combustion is caused; practical studies have shown that, in addition to the above 3 elements, there is a fourth element, which is the most easily ignored element, to maintain a stable, sustainable combustion process (chemical reaction process), namely: the chain reaction which is not inhibited, theoretically, if one of the above four elements is removed, the combustion process becomes non-sustainable, and the oxidation reaction is also inhibited. In normal air, the volume percentage of oxygen is about 21%, nitrogen is 78%, and other gases are about 1%. Scientific experiments have shown that as long as the oxygen concentration is below 16.2% (low oxygen), the fire can no longer be ignited and the combustion can no longer continue, by the mechanism: the difference in oxygen concentration reduces the availability of oxygen to support combustion, and the increase in nitrogen molecule density due to interference with the kinetic properties of the oxygen molecules provides a "buffer" that prevents oxygen from being utilized.
Therefore, the oxygen concentration of the high-temperature treatment chamber is controlled by continuously supplying the nitrogen working medium into the high-temperature treatment chamber 5, so that the combustion process can be effectively inhibited, the oxidation reaction is actively controlled and avoided, the paper is heated to the temperature point of the carbonization process of the paper in the high-temperature treatment chamber only due to the high temperature generated by the external heater as the heat source (generally, the paper can be completely carbonized at about 300-800 ℃, more preferably, the paper is carbonized at 300-500 ℃, typically, an adjustable temperature interval is adopted in the actual device design to adapt to the treatment requirements of different waste paper varieties), in the high-temperature treatment chamber 5, due to the injection of the nitrogen working medium, the treatment space is continuously maintained to form a special normal-pressure low-oxygen environment with the oxygen content lower than 16.2% (v/v, volume percentage), and the special normal-pressure low-oxygen environment can effectively inhibit the chain reaction of the combustion process, the burning of open flame is avoided, the oxidation process is avoided, the paper is carbonized and cracked at high temperature only due to the high temperature generated by the heat source, and the working medium, the carbonized and cracked gas (mainly a small amount of methane, carbon monoxide and other gases) possibly formed by cracking can be filtered by the high-temperature filter 6 to remove the working medium after dust is filtered out, and the working medium is directly connected to a sewer; meanwhile, the paper powder after high-temperature carbonization treatment is discharged due to the fact that the introduced water source enters a sewer.
Different with traditional system of burning, the utility model discloses smokeless carbonization process of high temperature based on under the inert working medium protective conditions not only can thoroughly destroy waste paper for powdered and can't recover, does not have a large amount of smoke and dust that open flame burning brought, and the effectual technical defect who overcomes traditional processing technique deals with the facility as the scene, and the discarded object after the processing is accomplished directly arranges into the sewer along with the water source, and is high-efficient, convenient, swift, safety, environmental protection.
Example 1
High-temperature carbonization of common printing paper:
(1) taking an alumina ceramic crucible with the diameter of 50mm, the height of 50mm and the wall thickness of 3mm, putting cut A4 paper, putting a semicircular alumina crucible boat with the diameter of 60X 3mm, and placing the crucible boat at the center of a tube furnace; placing a 70X 4mm crucible at the outlet to block most of the opening, and only leaving 1-2mm crescent-shaped slits to keep the gas circulation;
(2) introducing gas, wherein the flow rate of nitrogen/the flow rate of air are both set to be 0.5L/min;
(3) temperature program setting and start of warming: heating from room temperature to 100 ℃ at the rate of 1 ℃ per minute, heating to the set temperature at the rate of 3 ℃ per minute, preserving heat for 2 hours, naturally cooling to room temperature, taking out, and observing the state of the paper.
The result of the above experiment is the morphology of the paper sheet after two hours of heat preservation at the instrument temperature of 200 ℃, 250 ℃, 275 ℃, 300 ℃ and 400 ℃.
Table 1 is a summary of the phenomena under the respective experimental conditions
Example 2
in order to meet the treatment requirements of 500 pieces of A4 waste paper (temporarily counted by 70g/m2, the size of each piece is about 4.366g, and the total weight is 2.183 kg), the working state of the treatment chamber is not lower than 2.183kg, the effective volume is not lower than the requirement of storing 500 pieces of A4 waste paper, the size phi 400 x 400 (mm) of the high-temperature treatment chamber is designed to meet the requirements, meanwhile, in order to facilitate the paper to be put into and carbonized to be conveniently sent into the paper shredding treatment chamber, the high-temperature working temperature is resistant to the working condition of more than 800 ℃, the surface temperature is not higher than the design condition of 50 ℃, and the requirements of nitrogen working media, water source inlets and outlets and the like are reserved for structural design.
Meanwhile, in the high-temperature treatment chamber, the paper is heated to the carbonization process temperature point of the paper (generally, as the test is carried out, the paper can be completely carbonized within 500 ℃, the temperature range which can be adjusted by 300-500 ℃ is designed to meet the treatment requirements of waste paper of different types, which is wider), in the treatment chamber, because the high-temperature treatment chamber is filled with nitrogen working medium, the treatment space is continuously maintained to form a special normal-pressure low-oxygen environment with the oxygen content lower than 16.2% (v/v, volume percentage), and the flow rate, purity and required heat source of the nitrogen working medium are all selected according to the design of the known technology.
Meanwhile, for possible smoke dust, a self-cleaning cross-flow type nitrogen working medium back-flushing self-cleaning high-temperature filter and type-selecting crushing equipment are adopted, and a material access structure, a water source access structure and a flushing discharge structure are designed, wherein the equipment comprises the following list:
the main utility consumption and equipment physical characteristics are tabulated as follows:
according to the step, completely carbonize 500A 4 waste paper into powder in 2 hours, the discarded object after the processing is accomplished is direct along with the water source sewer of discharging, high efficiency, convenience, swift, safety, environmental protection.
The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and those skilled in the art can make various modifications or equivalent replacements within the protection scope of the present invention, and such modifications or equivalent replacements should also be considered as falling within the protection scope of the present invention.
Claims (3)
1. A device for destroying paper confidential documents, comprising:
at least one high-temperature carbonization disposal chamber for accommodating paper confidential documents to be disposed; the high-temperature carbonization processing chamber is provided with an inlet which can be used for feeding the paper documents, and the inlet can be closed; the device is also provided with a connector for the inlet and the outlet of inert working media, a connector for the inlet of a water supply source, and a connector for feeding the treated paper powder and a cleaning water source into a sewer;
the nitrogen working medium generator is connected with the inert working medium interface of the high-temperature carbonization treatment chamber and is used for providing inert working medium protection conditions for the high-temperature carbonization treatment chamber;
the heater is used for heating the inert working medium output by the nitrogen working medium generator and providing high-temperature carbonization energy for the high-temperature carbonization treatment chamber;
at least one high-temperature filtering device for filtering and intercepting dust possibly existing in the high-temperature carbonization treatment chamber;
the mechanism can crush the carbonized paper and is used for further crushing the carbonized paper so as to be conveniently discharged into a sewer;
a pipeline, a valve and a connector which can be connected with a water source are used for flushing carbonized paper powder into a sewer;
and the controller is used for controlling the temperature and the oxygen content in the high-temperature carbonization treatment chamber and starting, stopping and controlling the operation of each sub-device.
2. The apparatus for destroying paper security documents as recited in claim 1, wherein said high temperature carbonization chamber is further provided with a layer of insulating and heat-insulating material.
3. The apparatus for destroying paper confidential documents according to claim 1, wherein said high temperature filtration device is a self-cleaning filtration device, including a cross-flow filtration type filtration device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120483018.7U CN215175111U (en) | 2021-03-07 | 2021-03-07 | Device for destroying paper confidential documents |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120483018.7U CN215175111U (en) | 2021-03-07 | 2021-03-07 | Device for destroying paper confidential documents |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215175111U true CN215175111U (en) | 2021-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120483018.7U Active CN215175111U (en) | 2021-03-07 | 2021-03-07 | Device for destroying paper confidential documents |
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| CN (1) | CN215175111U (en) |
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- 2021-03-07 CN CN202120483018.7U patent/CN215175111U/en active Active
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