CN110375867B - Temperature test method for material tank - Google Patents
Temperature test method for material tank Download PDFInfo
- Publication number
- CN110375867B CN110375867B CN201810328840.9A CN201810328840A CN110375867B CN 110375867 B CN110375867 B CN 110375867B CN 201810328840 A CN201810328840 A CN 201810328840A CN 110375867 B CN110375867 B CN 110375867B
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- China
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- thermocouple
- digital display
- steel pipe
- temperature
- display meter
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K2219/00—Thermometers with dedicated analog to digital converters
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention relates to a temperature testing method, in particular to a method for testing the temperature distribution of an anode for aluminum production in a tank type charging bucket in the carbon industry. A method for testing the temp of material tank includes such steps as inserting a thermocouple in steel tube, filling powder filler in steel tube, fixing the thermocouple, connecting the thermocouple to digital display meter by compensating wire, inserting the steel tube in material tank, inserting it from the center of feeding hopper, inserting it to a preset depth position, and pulling up the steel tube by a certain height after the data of digital display meter is stabilized. The invention has the advantages that: under the condition of guaranteeing the normal production of pot-type furnace, material temperature distribution in the material jar is tested under the prerequisite that does not influence production, the device is simple, convenient operation, and the data detected can optimize flame path temperature distribution and technology system, promotes product quality.
Description
Technical Field
The invention relates to a temperature testing method, in particular to a method for testing the temperature distribution of an anode for aluminum production in a tank type charging bucket in the carbon industry.
Background
In recent years, the pot furnace has the advantages of good production stability, high product quality, small burning loss and the like, so that the pot furnace becomes a preferred kiln for calcination favored by broad owners on the premise of great rise of raw material price, and is in the phase of elimination in the field compared with a rotary kiln. Therefore, in the field of petroleum coke calcination in China, the research and the technology of the pot furnace are applied unprecedentedly.
However, the pot furnace is complex in structure, the quality control of calcined coke mainly depends on the fire way temperature distribution condition, and in fact, no matter negative pressure control or temperature distribution control in the fire way of the pot furnace, the core is the temperature distribution control of petroleum coke in the pot furnace burden tank, different fire way temperature distributions correspond to different charging bucket temperature distributions and also correspond to different calcined coke product qualities. The temperature of the flame path is measured at present, but the temperature in the material tank is estimated, so that the measurement of the temperature distribution in the material tank becomes a difficult problem, and the temperature distribution has important guiding significance for the temperature distribution system of the flame path and the adjustment of the calcining process system in practice.
Disclosure of Invention
The invention provides a method for testing the temperature of a charging bucket, aiming at solving the problems and aiming at detecting the temperature distribution in the charging bucket on the premise of not influencing the production during the normal production of a pot furnace, obtaining the temperature distribution curve of the charging bucket in the height direction, optimizing the calcination process system and improving the product quality.
The invention is a material tank temperature test method, which is characterized in that a thermocouple is inserted into a steel pipe, the steel pipe is filled with powder filling material and then fixed, the thermocouple is connected to a digital display meter by a compensation lead, the steel pipe is inserted into the material tank and inserted from the center of a feeding hopper to a depth position which is calculated and set in advance, after the data of the digital display meter is stabilized, the whole steel pipe is pulled upwards to a fixed height, and then the temperature of the next test point is tested continuously.
The thermocouple is an N-type armored thermocouple with an alloy sleeve, the long-term use temperature is not higher than 1200 ℃, and the length is preferably the height from the top surface of the charging hopper to the outlet of the furnace body.
The powder filler is alumina powder, the alumina powder is dried before testing, and after the thermocouple is inserted into the steel pipe, the alumina powder is poured into the steel pipe to fill the gap between the thermocouple and the steel pipe, so that the filling is required to be compact.
The type of the compensation lead is consistent with that of the thermocouple, the length of the compensation lead is 5-10m longer than that of the thermocouple, and the compensation lead can resist the high temperature of 200 ℃.
The type of the digital display meter is consistent with that of the thermocouple, the digital display meter is an N-type thermocouple digital display meter, the precision is +/-0.1 ℃, and the upper limit of the measuring range is 1300 ℃.
The top end of the steel pipe is open, and the bottom end of the steel pipe is welded with a cast iron cone.
And after the data of the digital display meter is stable, the fluctuation is less than 0.1 ℃ within 5 seconds.
According to the temperature distribution rule in the height direction in the charging bucket, the height of upward pulling each time when the temperature measuring point of the steel pipe in the charging bucket is below the 5 th flame path is 10cm, and the height of upward pulling is 20cm above the temperature measuring point.
The invention has the advantages that: under the condition of guaranteeing the normal production of pot-type furnace, material temperature distribution in the material jar is tested under the prerequisite that does not influence production, the device is simple, convenient operation, and the data detected can optimize flame path temperature distribution and technology system, promotes product quality.
Detailed Description
The following examples are given for the purpose of illustrating the present invention, and are not to be construed as limiting the scope of the present invention.
The invention discloses a method for testing the temperature of a material tank, which comprises the steps of inserting a thermocouple into a steel pipe, fixing the thermocouple after the steel pipe is filled with powder filler, connecting the thermocouple to a digital display meter by a compensation lead wire, inserting the steel pipe into the material tank, inserting the steel pipe from the center of a feeding hopper, inserting the steel pipe to a preset depth position calculated in advance, pulling up the whole steel pipe by a fixed height after the data of the digital display meter is stabilized, and continuously testing the temperature of the next test point.
The thermocouple is an N-type armored thermocouple with an alloy sleeve, the long-term use temperature is not higher than 1200 ℃, the length is preferably the height from the top surface of the charging hopper to the outlet of the furnace body, and for an eight-layer flame path pot furnace, the length of the thermocouple is generally 8 m.
The powder filler is alumina powder, the alumina powder is dried before testing, and after the thermocouple is inserted into the steel pipe, the alumina powder is poured into the steel pipe to fill the gap between the thermocouple and the steel pipe, so that the filling is required to be compact.
The type of the compensation lead is consistent with that of the thermocouple, the length of the compensation lead is 5-10m longer than that of the thermocouple, and the compensation lead can resist the high temperature of 200 ℃, generally about 15 m.
The type of the digital display meter is consistent with that of the thermocouple, the digital display meter is an N-type thermocouple digital display meter, the precision is +/-0.1 ℃, and the upper limit of the measuring range is 1300 ℃.
The top end of the steel pipe is open, so that a thermocouple and a filling material can be conveniently inserted, and the bottom end of the steel pipe is welded with a cast iron cone, the height of the cast iron cone is about 5cm, so that the cast iron cone can be conveniently inserted into a charging bucket. The steel pipe is ordinary steel pipe or stainless steel pipe, and length is confirmed according to furnace body height and setting test position, and for eight-deck flame path pot-type furnace, general pipe diameter DN25, length are 7.8m, and a cast iron centrum of bottom welding.
And after the data of the digital display meter is stable, the fluctuation is less than 0.1 ℃ within 5 seconds.
According to the temperature distribution rule in the height direction in the charging bucket, the height of upward pulling each time when the temperature measuring point of the steel pipe in the charging bucket is below the 5 th flame path is 10cm, and the height of upward pulling is 20cm above the temperature measuring point.
The detected temperature in the right center of the charging hopper is the lowest temperature in the charging bucket, is representative and can explain the lowest temperature distribution condition in the charging bucket.
Claims (1)
1. A temperature test method of a charging bucket is characterized in that a thermocouple is inserted into a steel tube, the inside of the steel tube is filled with powder filling materials and then fixed, the thermocouple is connected to a digital display meter through a compensation lead, the steel tube is inserted into the charging bucket and inserted from the center of a charging hopper to a preset depth position, after data of the digital display meter is stabilized, the whole steel tube is pulled upwards to a fixed height, and then the temperature of the next test point is continuously tested; the thermocouple is an N-shaped armored thermocouple with an alloy sleeve, the long-term use temperature is not higher than 1200 ℃, and the length is preferably the height from the top surface of the charging hopper to the outlet of the furnace body; the powder filler is alumina powder, the alumina powder is dried before testing, and after the thermocouple is inserted into the steel pipe, the alumina powder is poured into the steel pipe to fill the gap between the thermocouple and the steel pipe, and the filling is required to be compact; the top end of the steel pipe is open, and the bottom end of the steel pipe is welded with a cast iron cone; according to the temperature distribution rule in the height direction in the charging bucket, the upward pulling height of the temperature measuring point of the steel pipe in the charging bucket is 10cm each time when the temperature measuring point is in the position of the area below the 5 th flame path, and the area above is 20 cm; the type of the compensation lead is consistent with that of the thermocouple, the length of the compensation lead is 5-10m longer than that of the thermocouple, and the compensation lead can resist the high temperature of 200 ℃; the model of the digital display meter is consistent with that of the thermocouple, the digital display meter is an N-type thermocouple digital display meter, the precision is +/-0.1 ℃, and the upper limit of the measuring range is 1300 ℃; and when the data of the digital display meter is stable, the fluctuation is less than 0.1 ℃ within 5 seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810328840.9A CN110375867B (en) | 2018-04-13 | 2018-04-13 | Temperature test method for material tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810328840.9A CN110375867B (en) | 2018-04-13 | 2018-04-13 | Temperature test method for material tank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110375867A CN110375867A (en) | 2019-10-25 |
| CN110375867B true CN110375867B (en) | 2021-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810328840.9A Active CN110375867B (en) | 2018-04-13 | 2018-04-13 | Temperature test method for material tank |
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Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3845706A (en) * | 1972-03-22 | 1974-11-05 | Bethlehem Steel Corp | Apparatus for continuously measuring temperature in a furnace |
| CN201075042Y (en) * | 2007-08-09 | 2008-06-18 | 武汉钢铁(集团)公司 | Device for measuring interval temperature in stove |
| CN106322430B (en) * | 2015-06-24 | 2018-11-02 | 沈阳铝镁设计研究院有限公司 | Pot type burner method for controlling combustion |
| CN105784165A (en) * | 2016-03-18 | 2016-07-20 | 沈阳飞机工业（集团）有限公司 | Thermal treatment furnace system precision on-line test system and on-line test method |
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| CN110375867A (en) | 2019-10-25 |
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