CN100392381C - Method for detecting combustion characteristic of coal by use of oxygen bomb method - Google Patents
Method for detecting combustion characteristic of coal by use of oxygen bomb method Download PDFInfo
- Publication number
- CN100392381C CN100392381C CNB021385394A CN02138539A CN100392381C CN 100392381 C CN100392381 C CN 100392381C CN B021385394 A CNB021385394 A CN B021385394A CN 02138539 A CN02138539 A CN 02138539A CN 100392381 C CN100392381 C CN 100392381C
- Authority
- CN
- China
- Prior art keywords
- coal
- temperature rise
- bomb
- oxygen bomb
- judge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Images
Abstract
The present invention discloses a method for measuring coal burning characteristics by an oxygen bomb method. The heat productivity of coal is measured by the oxygen bomb method, and the heat productivity is fixed. The igniting characteristic and the burning-out rate are judged by the temperature rise condition. The present invention has the advantages of simple device, high speed, saving of power consumption, and simple operation.
Description
Described technical field
The invention belongs to coal analysis test, Thermal Power Engineering, be specifically related to a kind of assay method of coal burning characteristic.
Background technology
The coal burning characteristic generally is meant ignition propensity, burnout rate, and it is the important indicator whether certain coal of decision is fit to particular burner.In general, burner, as boiler, kiln, design is in case determine to have only and use the coal competence exertion high-level efficiency with corresponding combustion characteristics.
Coal combustion character is judged by thermogravimetric analysis in the laboratory, but thermogravimetric analyzer costs an arm and a leg, complicated operation, has only high-caliber university, research institute just to equip; The common vast combustion characteristics of judging coal with coal unit by the coal fugitive constituent indirectly, but fugitive constituent is a coal burning characteristic major influence factors, rather than unique influence factor, so the situation that do not conform to the actual conditions and close often appears in the conclusion that this determination methods draws.
Summary of the invention
The present invention is directed to the deficiency of above-mentioned combustion characteristics assay method, propose to utilize the bomb method principle to measure the method for combustion characteristics, have the advantages that equipment is simple, speed is fast, power consumption is little, simple to operate.
Concrete technical scheme of the present invention is: determine heating value of coal by the GB bomb method earlier, change again and claim that sample maintenance single test heating total amount is a steady state value, oxygenation pressure is 0.6～2.5MPa, press heat output determining method survey record igniting back temperature rise process again, judge the coal fire behaviour according to the early stage situation of temperature rise curve at last, judge the coal burnout rate according to back segment heating curve or residual ash, thus the combustion characteristics of drawing.
This method compared with the prior art, it is simple to have a test unit, test speed is fast, advantages such as little power consumption.
Description of drawings
Below in conjunction with drawings and Examples the present invention is described in further detail.
Fig. 1 is the temperature rise time plot of embodiment 1.
Embodiment
Embodiment 1
Get one group of coal, unified oven dry, pulverizing, sample preparation obtain≤coal dust of 0.2mm granularity; Place oxygen bomb heat instrument to measure its thermal value Qb each coal dust by standard conditions; At 4000 * 4.18KJ, calculate the various kinds quality of pc by the thermal value total amount; Reduce oxygenation pressure to 0.8MPa, place oxygen bomb heat instrument, determine Qb ' and temperature rise curve; The ignitability of this coal is judged in temperature rise during according to 1.5 minutes, according to φ
Q(=Qb '/Qb) judge the burning property of this coal.
Can judge burning property 5＞4＞3＞2＞1 according to last table φ, this is with identical according to the fugitive constituent inferred results; And according to Δ t
1.5Ignition propensity 5＞3＞4＞2＞1 can be judged, 3,4 order be paid special attention to, though No. 4 coal fugitive constituents are higher, its ash content height, so its ignition propensity descends, this and thermogravimetric analysis result coincide.
Embodiment 2
Get one group of coal, unified oven dry, pulverizing, sample preparation obtain≤coal dust of 0.2mm granularity; Place oxygen bomb heat instrument to measure its thermal value Qb each coal dust by standard conditions; At 4000 * 4.18KJ, calculate the various kinds quality of pc by the thermal value total amount; Reduce oxygenation pressure to 0.8MPa, place oxygen bomb heat instrument, determine temperature rise curve and do not fire ash content Aad ' entirely; The ignitability of this coal is judged in temperature rise during according to 1.5 minutes, according to φ
A{=(100-Aad ')/(100-A) } judge the burning property of this coal, A is for firing ash content fully.
Can judge ignition propensity 6＜7＜8 by last table; Easily burning property 6＜7＜8.
It is worthy of note that No. 8 φ appears in sample
A＞1 situation no wonder is that ash content splashes and causes.
Claims (2)
1. method of utilizing bomb method to measure the coal burning characteristic, it is characterized in that: this method is carried out according to the following procedure:
(1) gets one group of coal, determine heating value of coal by the GB bomb method earlier;
(2) change the title sample, keeping single experiment heating total amount is steady state value;
(3) reduce oxygenation pressure and press heat output determining method survey record igniting back temperature rise process;
(4) judge the coal fire behaviour according to the early stage situation of temperature rise curve, according to back segment temperature rise curve or residual ash disconnected declare the coal burnout rate, thereby the combustion characteristics of drawing.
2. bomb method according to claim 1 is measured the method for coal burning characteristic, and the oxygenation pressure after it is characterized in that reducing in the step (3) is 0.6-2.5MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021385394A CN100392381C (en) | 2002-11-06 | 2002-11-06 | Method for detecting combustion characteristic of coal by use of oxygen bomb method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021385394A CN100392381C (en) | 2002-11-06 | 2002-11-06 | Method for detecting combustion characteristic of coal by use of oxygen bomb method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1415955A CN1415955A (en) | 2003-05-07 |
| CN100392381C true CN100392381C (en) | 2008-06-04 |
Family
ID=4749547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021385394A Withdrawn - After Issue CN100392381C (en) | 2002-11-06 | 2002-11-06 | Method for detecting combustion characteristic of coal by use of oxygen bomb method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100392381C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101762341B (en) * | 2009-12-28 | 2011-10-26 | 清华大学 | Method for measuring ignition temperature of solid fuel |
| CN102207478A (en) * | 2011-03-11 | 2011-10-05 | 中国计量科学研究院 | Gas combustion heat measuring device and combustion heat measuring method utilizing the same |
| CN104458805B (en) * | 2014-12-18 | 2017-01-18 | 广西大学 | Pulverized coal suspension combustion characteristic trial furnace for cement kiln |
| CN105784767A (en) * | 2016-05-12 | 2016-07-20 | 本钢板材股份有限公司 | Method for measuring calorific value of high volatile coal |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4616938A (en) * | 1983-01-10 | 1986-10-14 | Leco Corporation | Apparatus for measuring thermal and other quantities of substances |
| US4720196A (en) * | 1985-06-18 | 1988-01-19 | Societe Nationale Elf Aquitaine (Production) | Method and apparatus for measuring the heating power of combustible gases |
| JPH11295283A (en) * | 1998-03-04 | 1999-10-29 | Thermoquest Italia Spa | Method and device for analyzing element by instantaneous combustion in oxygen |
-
2002
- 2002-11-06 CN CNB021385394A patent/CN100392381C/en not_active Withdrawn - After Issue
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4616938A (en) * | 1983-01-10 | 1986-10-14 | Leco Corporation | Apparatus for measuring thermal and other quantities of substances |
| US4720196A (en) * | 1985-06-18 | 1988-01-19 | Societe Nationale Elf Aquitaine (Production) | Method and apparatus for measuring the heating power of combustible gases |
| JPH11295283A (en) * | 1998-03-04 | 1999-10-29 | Thermoquest Italia Spa | Method and device for analyzing element by instantaneous combustion in oxygen |
Non-Patent Citations (2)
| Title |
|---|
| 混煤的着火特性分析. 周光华.浙江电力，第5期. 1995 * |
| 矿物组分对煤炭发热量的影响. 张洪等人.中国矿业大学学报，第27卷第3期. 1998 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1415955A (en) | 2003-05-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Ko et al. | Emissions and efficiency of a domestic gas stove burning natural gases with various compositions | |
| CN101038276B (en) | Method and device for detecting coal powder performance | |
| Bhattacharya et al. | Effects of selected parameters on performance and emission of biomass-fired cookstoves | |
| Zhao et al. | Combustion characteristics of different parts of corn straw and NO formation in a fixed bed | |
| Panwar | Design and performance evaluation of energy efficient biomass gasifier based cookstove on multi fuels | |
| Sonarkar et al. | Thermal performance of three improved biomass-fired cookstoves using fuel wood, wood pellets and coconut shell | |
| CN111274526B (en) | Calculation method for ignition temperature of single coal type pulverized coal airflow | |
| CN100392381C (en) | Method for detecting combustion characteristic of coal by use of oxygen bomb method | |
| CN105670715B (en) | A kind of high-performance environment-friendly alcohol-based fuel and preparation method thereof | |
| Suryawanshi et al. | Effect of injection timing retard on emissions and performance of a pongamia oil methyl ester fuelled CI engine | |
| CN102393403A (en) | Device and method for detecting combustion characteristic of tail gas containing high-concentration CO | |
| Obaidullah et al. | CO emission measurements and performance analysis of 10 kW and 20 kW wood stoves | |
| CN102937382A (en) | Adjusting and optimizing method of ratio-controlled combustion system | |
| Petrocelli et al. | CO and NO emissions from pellet stoves: an experimental study | |
| Deng et al. | Directions to improve the thermal efficiency of household biomass cookstoves: A review | |
| CN1536352A (en) | Method for determining combustion characteristics of coal by using oxygen bomb process | |
| CN110146545A (en) | A method of boiler combustion performance is improved using coal quality burning discriminant index | |
| CN204042871U (en) | The combustion system of the blue charcoal waste gas of a kind of blended burning of coal fired boiler | |
| Han et al. | Study of the combustion mechanism of oil shale semicoke in a thermogravimetric analyzer | |
| Yadav et al. | Performance analysis of LPG cook stoves with modifications | |
| CN108918318A (en) | A kind of test and evaluation method of thermal coal after-flame performance | |
| CN113578513A (en) | Control method and system for outlet temperature of coal mill of direct-fired pulverizing system | |
| Sturmlechner et al. | Real life emissions of domestic wood heating appliances Results of a field campaign in the Clean Air by biomass project | |
| Kiwana et al. | SEEK: Fuel performance of faecal sludge briquettes in Kampala, Uganda | |
| CN102878801A (en) | Integrated energy-saving tunnel kiln sintered by closed combustion |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C04 | Withdrawal of patent application after publication (patent law 2001) | ||
| WW01 | Invention patent application withdrawn after publication | ||
| C52 | Restoration of the patent application or patent right (restoration of the patent application) | ||
| RA01 | Restoration of patent right |
Former decision: Withdrawal of an application for publication of a patent for invention |
|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |