This standard specifies the assessment criteria for daily-use ceramic flame tunnel kiln (hereinafter referred to as "kiln") file management, production safety, industrial innovation, measurement level, energy-saving measures, product firing quality, unit energy consumption, thermal efficiency and other economic, technical and management contents. This standard is applicable to the assessment of tunnel kilns fired with coal, oil and gas fuels for the production of daily-use ceramics. QB/T 1703-1993 Assessment Method and Assessment Standard for Daily-use Ceramic Flame Tunnel Kiln QB/T1703-1993 Standard Download Decompression Password: www.bzxz.net

Light Industry Industry Standard of the People's Republic of China
Daily Ceramic Flame Tunnel Kiln
Grade Assessment Method and Assessment Standard
This standard is used as the evaluation standard for the thermal performance, management and operation level of daily ceramic flame tunnel kilns. 1 Subject content and scope of application
QB/T 1703--1993
This standard specifies the assessment standards for the economic, technical and management contents of daily ceramic flame tunnel kilns (hereinafter referred to as "kilns"), including file management, production safety, industrial hygiene, measurement level, energy-saving measures, product firing quality, unit energy consumption, thermal efficiency, etc. This standard is applicable to the assessment of tunnel kilns fired with coal, oil and gas fuels for the production of daily ceramics. 2 Reference standard
QB/T1493 Determination and calculation method of thermal balance and thermal efficiency of daily ceramic flame tunnel kilns 3 Assessment scope
Enterprises engaged in the production of daily ceramics.
4 Evaluation conditions
4.1 The kiln must be in continuous, stable and safe production, with no production stoppage accidents in a year (continuous production stoppage for more than three days is considered an accident) to be eligible to apply for grade evaluation.
4.2 All dense furnaces that apply for grade evaluation must have their thermal balance and thermal efficiency measured in accordance with QB/T1493 by local departments at or above the municipal level with measurement certificates, and have complete measurement reports. During the review, the administrative department will review the information. 4.3 All rich furnaces that apply for grade evaluation must have complete kiln files. Including design drawings, thermal balance measurement reports, maintenance records, operating procedures, positions Responsibility system, original records of product quality and energy consumption. Fill out the application form three months in advance, in five copies, and submit it to the relevant administrative departments and China Ceramic Industry Association.
5 Evaluation method
In principle, the administrative department and the China Ceramic Industry Association entrust the dense furnace grade evaluation team composed of various regions to conduct the preliminary evaluation work, and the preliminary evaluation results shall be reported to the National Daily Ceramic Kiln Grade Evaluation Committee for examination and approval. If necessary, spot checks and re-examinations shall be carried out on the dense furnaces that have been initially evaluated to ensure the seriousness of the evaluation work. The permanent institution of the National Daily Ceramic Dense Kiln Grade Evaluation Committee is located in the Energy Saving Technology Center of the China Ceramic Industry Association. Grade
The grades of dense furnaces are divided into special, first, second and third grades. Those that do not reach the third grade are considered out-of-grade. The levels reached by various grades of kilns: Special international advanced level
First domestic leading level
Li domestic advanced level
The Ministry of Light Industry of the People's Republic of China approved 212 on March 28, 1993
Implemented on October 1, 1993
Third domestic general level
? Daily ceramic flame tunnel dense level assessment standard 7.1 File management (30 points)
7.1.1 Kiln design, construction drawings and materials (8 points) QB/T 1703-1993
Including complete original kiln design drawings, acceptance report signed by both parties A and B, and perfect four thermal systems (temperature, pressure, atmosphere, and vehicle speed curve). If one of them is missing, 2 points will be deducted.
Note: The kiln drawings of buildings built before 1980 are incomplete, and there must be broken dough and process layout defects in the firing zone. 7.1.2 Thermal balance measurement report (10 points)
There must be a thermal balance and thermal efficiency measurement report of the kiln in accordance with QB/T1493 within 12 months. 7.1.3 Original production quality records (4 points) There must be complete original records of the quality of the fired products for 12 consecutive months before the application, and the signature of the workshop auditor. 7.1.4 Maintenance records (3 points)
There must be original records of the maintenance history of the kiln and the signature of the maintenance person in charge. Including maintenance plan, kiln failure and maintenance records. 7.1.5 Energy consumption records (3 points)
There are original records of daily fuel consumption of the kiln for 12 consecutive months before the application, and the signature of the duty officer. If the fuel is supplied by an external unit, such as city gas, the data shall be provided by the gas supply unit. 7.1.6 There are sound operating procedures and a post fee system. (2 points) 7.2 Safe production, continuous safe operation for more than one year without production stoppage and personal accidents (10) 7.2.1 No accidents of kiln collapse caused by improper firing operation. (2 points) 7.2.2 No accidents of kiln collapse caused by improper loading. (2 points) 7.2.3 No brick falling caused by poor quality of furnace reconstruction. (2 points) 7.2. No accidents caused by untimely maintenance of kiln vehicles. (2 points) 7.2.5 Standardized operation of firing, loading and auxiliary personnel. (2 points) Note: Suspension of production caused by objective factors such as power outages, earthquakes, floods, wind and other force majeure is not counted as an accident (specific description of objective conditions is required). Suspension of production caused by human factors, untimely equipment maintenance and improper operation for more than three days is considered an accident. 7.3 Industrial hygiene (6 points)
7.3.1 The factory building is clean, bright, tidy and free of debris, and the toilets and products are stored in an orderly manner. (2 points) 7.3.2 There is no leakage of gas, steam, oil, smoke or water around the kiln, and fire prevention measures are in place. (2 points) For each leakage found, 0.5 points will be deducted until it is completely discharged. 7.3.3 The smoke and dust emissions meet national standards. (2 points) Note: There should be a smoke and dust emission detection notice from the local environmental protection department. 7.4 Measuring instruments (9 points)
7.4.1 Measuring level (4 points)
Reach the national third-level measurement level. (3 points) Reach the national second-level measurement level. (4 points) 7.4.2 Control form and level (5 points)
Manual operation, instrument monitoring. (3 points)
Conventional instrument control and normal operation. (4 points) Microcomputer control and normal operation. (5 points)
Note: The control parameters are temperature, pressure, and gas oxygen monitoring. 7.5 Energy-saving measures (35 points)
7.5.1 Summarize the excess air coefficient of the flue (8 points) 213
QB/T1703—1993
When oil and gas are used as fuel, α≤2.5 when reducing gas nitrogen is used. When oil and gas are used as fuel, α≤4.0 when oxidizing gas chlorine is used. When coal is used as fuel, α≤3.75 when reducing atmosphere is used. When coal is used as fuel, α≤6.00 when α increases by 1, 2 points are deducted until all points are deducted. For the calculation method only, see Appendix H in QB/T1493. 7.5.2 Energy-saving technology is used for fuel combustion (4 points) Energy-saving rate is above 6%. (4 points)
Energy-saving rate is above 4%. (3 points)
Energy-saving rate is above 2%. (2 points)
7.5.3 Insulation measures (10)
The fraction of heat dissipation in the total energy consumption of the kiln is ≤10%. (10 points) The fraction of heat dissipation in the kiln is ≤15%. (8 points) The fraction of total energy consumption of the ancient kiln is ≤20%. (6 points) Note: For the calculation method of heat dissipation in the dense body, see 6.2. Day in QB/T1493. 7.5.4 The adoption rate of energy-saving power equipment (motor, fan, pump) in the dense furnace system (4 points) The power of energy-saving equipment accounts for more than 90% of the total power of the dense furnace equipment. (4 points) The power of energy-saving equipment accounts for more than 80% of the total power of the dense furnace equipment. (3 points) The power of energy-saving equipment accounts for more than 70% of the total power of dense furnace equipment. (2 points) Note: The energy-saving equipment announced by the Machinery Commission is used as the assessment basis. 7.5.5 Utilization level of waste heat resources of kilns (9 points) The waste heat resource recovery rate is more than 50%. (9 points) The waste heat resource recovery rate is more than 40%. (7 points) The waste heat resource recovery rate is more than 30%. (5 points) Note: For the calculation method of waste heat resource recovery rate, see 7.9 of QB/T1493 7.6 Comprehensive evaluation by experts (10 points)
7.7 Product firing quality
Dense furnace grade
Firing pass rate
n+(1—)×60%
n+(1-)x30%
—(1—)×30%
Note: It is the quality index of firing pass rate stipulated by each region. When evaluating, the regional product firing quality standard should be established. 7.8 Product energy consumption quota standard (kl/kg product) Table 2
Product type
(2 000)
(6 000)
10 454
(2500)
(8000)
kJ/kgProduct
(3000)
(9000)
Product Category
Gas Fuel
Gas Fuel
(3800)
(4550)
(5680)
(5500)
(6300)
(7870)
QB/T1703—1993
Continued Table 2
25 090
(6 000)
29 271
(7D00)
(8750)
(7000)
(10 000)
(7800)
37 634
(9000)
(11 250)
(9500)
(11 000)
(13750)
kJ/lkg products
(8700)
41 816
(10000)
(12 500)
(11 000)
54 361
(13 090)
67 951
(16 250)
Note: ① Product energy consumption quota: The data listed in the table are all energy consumption quotas for once-fired products. For example, the energy consumption quotas for unglazed, plain and colored fired products can be modified by the expert group according to actual conditions.
② The standard part is a 153mm (6\) soup plate. The weight of other products is converted according to it. ③ The unit of the number in the bracket is kcal/kg product. 7.9 Thermal efficiency of fired products
Product types
Kiln grade standard
Special kiln
Second kiln
Second kiln
Total score ≥ 95 points, the product firing quality, product energy consumption quota, and fired product thermal efficiency are all at the special level. Total score ≥ 90 points, the product firing quality, product energy consumption quota, and fired product thermal efficiency are all at the - level. The total score is ≥80 points, and the product firing quality, product energy consumption quota, and firing product thermal efficiency all reach the second grade. The total score of the third-grade kiln is ≥70 points, and the product firing quality, product energy consumption quota, and firing product thermal efficiency all reach the third grade. Landeng
If any one of the firing quality and firing product thermal efficiency items of any grade of dense furnace products is lower than 80% of the index of this grade, it will be downgraded to one grade, and if it is lower than 60% of this index, it will be downgraded to two grades; if the product energy consumption quota is 20% higher than the index of this grade, it will be downgraded to one grade, and if it is 40% higher than this index, it will be downgraded to two grades.
Company namebzxz.net
Product type
Annual energy consumption (standard coal)
Heat balance measurement time
Dense furnace construction time
Dense body length, m
Dense internal section size length × width, m
Combustion honey logarithm
Burners number
Firing overflow
Combustion gas
Waste heat utilization device type
Dense furnace control form and level
Total air excess coefficient
Percentage of dense body heat dissipation in total heat consumption
QB/T 1703---1993
Application form for density level of daily-use ceramic flame tunnel (reference)
Location of enterprise
Product output
Measurement level
Application level
The percentage of energy-saving power equipment power in the total power of density protection power equipment. The qualified rate of fired products, %
Product burning energy consumption.k1/kg product
Thermal efficiency of fired products, %
Waste heat resources Recovery rate, %
Self-evaluation opinion of the applicant:
(Enterprise seal)
Legal representative (signature)
Opinion of the kiln grade assessment committee:
OB/T1703--1993
Approval opinion of the National Daily Ceramic Industry Kiln Grade Assessment Committee: Approval opinion of the China Ceramic Industry Association:
Additional remarks:
This standard is proposed by the Production Coordination Department of the Ministry of Light Industry. This standard is under the jurisdiction of the National Ceramic Standardization Center. This standard is drafted by the Energy Saving Technology Center of the China Ceramic Industry Association. The main drafters of this standard are Zhao Delin, Chen Lijun, and Zhang Ruling. Group leader (signature)
Director (signature)
Manager (signature)
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