LY/T 3241-2020Technical regulation on energy saving for fiberboard production line (English PDF)

4.1 Planning and design

4.1.1 The design of the fiberboard production line should comply with the "Medium Density Fiberboard Engineering Design Code" GB 50822.

4.1.2 On the premise of meeting the relevant requirements of production process, safe production, environmental protection, energy saving and emission reduction, according to product types, characteristics, Specifications and output, etc., through scientific planning and design, so that the equipment, plant, layout, ventilation, heating, heat preservation and power supply system involved in production, Boiler thermal system, compressed air system, dust removal system, etc. achieve scientific and reasonable configuration, energy saving and high efficiency, stable operation and safe and reliable work Status, and should comply with relevant national or industry standards.

4.1.3 The substation and distribution station are set up in the load center to reduce the power loss of low-voltage lines.

4.1.4 Use capacitive compensation screen to reduce reactive power loss.

4.1.5 When the surface temperature of equipment and pipes exceeds 50°C, heat preservation and heat insulation treatment shall be carried out in accordance with GB/T 4272.

4.1.6 The layout of the general layout should meet the requirements of safe production, and the layout should be reasonable; the transportation and material transportation paths in the factory should be short and smooth.

smooth.

4.1.7 The layout of the fiberboard production workshop should adopt the direction of available natural lighting and natural ventilation. The lighting illuminance of the production workshop should meet According to the relevant regulations of GB 50034, high-efficiency energy-saving lamps should be selected.

4.1.8 The factory's water supply and drainage system should adopt energy-saving technologies and equipment, and comply with the relevant regulations of GB 50013 and GB 50015.

4.1.9 The design parameters of the hydraulic system of each equipment of the production line should meet the requirements of low power consumption, energy saving and high efficiency.

4.1.10 The comprehensive energy consumption of fiberboard production shall meet the requirements of the first-level index in LY/T 1451.

4.2 Production line equipment configuration

4.2.1 The equipment configuration of the production line should be compatible with the production capacity, types, specifications, technological process and technological advancement of the production line.

4.2.2 Select process equipment with low energy consumption, high degree of matching, and good reliability.

4.2.3 As far as possible, use low-energy energy-saving motors for equipment power to reduce power consumption.

4.2.4 Choose energy-saving transformers, contactors, relays and other electrical components.

4.2.5 The user should select equipment and equipment working parameters and power configuration according to the raw material tree species and diameter class classification.

4.2.6 The principles and technical conditions of economic operation of key motors, selection, replacement or modification shall comply with the relevant regulations of GB/T 12497.

4.2.7 The chipping system should use energy-saving chippers to meet the requirements of LY/T 1303 and LY/T 1338.

4.2.8 The heat mill system should use energy-saving heat mill to meet the requirements of LY/T 1005.

4.2.9 The drying system should use energy-saving dryers to meet the requirements of LY/T 1104.

4.2.10 The hot pressing system should use an energy-saving hot press to meet the requirements of GB/T 14712 and GB/T 5856.

4.2.11 The hydraulic system should regularly clean or replace the oil filter element, and the hydraulic water cooling system should be able to recycle the water.

4.2.12 The hydraulic system pressure should be adjusted accurately, and the system pressure should not be arbitrarily increased to compensate for other defects.

4.2.13 The performance, structure, display device and safety protection requirements of other equipment shall meet the requirements of GB/T 18262.

4.2.14 All major machines and working areas shall be equipped with instruments for monitoring economic operation in accordance with relevant standards.

4.2.15 The production equipment should reasonably determine the structure and drive power according to the functional requirements, and should comply with the relevant regulations of GB/T 18262.

4.2.16 The production equipment shall not use high-energy-consuming electromechanical products prohibited by the state.

4.3 Auxiliary production equipment configuration

4.3.1 Dust removal system

4.3.1.1 The dust removal piping system should be sealed and reliable.

4.3.1.2 The dust removal system of the production line workshop that needs heating should be equipped with a warm air return device to save energy, and the outdoor ventilation pipe should be insulated and insulated deal with.

4.3.1.3 All gates of the dust removal system should be opened freely and sealed reliably.

4.3.1.4 The enclosed space of each dust removal machine should be checked frequently and there should be no ventilation.

4.3.1.5 The dust removal system shall automatically control the motor speed through the variable frequency speed regulator through the sensor according to the negative pressure value of the dust collector.

4.3.2 Compressed air system

4.3.2.1 The air compressor selected for the production line should be energy-efficient, efficient, and reliable.

4.3.2.2 The compressed air system of the production line should be equipped with a compressed air storage tank with a reasonable volume.

4.3.2.3 The air compressor and air storage tank should be located as close to the production line as possible and meet the requirements of the air compressor room design code.

4.3.2.4 The diameter value of the main compressed air pipeline and the pipeline layout are calculated and determined according to actual needs. The pressure loss of the pipeline should not be excessive.

Large and one-sided increase the working pressure of the air machine.

4.3.2.5 The manufacturer of the production line or the auxiliary equipment manufacturer shall ensure that the pressure of each compressed air use point is roughly the same, and should not be on one production line.

Only a few high pressure points increase the load of the entire system and cause energy waste.

4.3.2.6 Each pressure execution component of the production line should run flexibly and stably, and the method of increasing the air supply pressure should not be used to forcibly drag to avoid damage and waste.

4.3.2.7 All pipe joints, valve bodies and executive components of the compressed air system shall not have air leakage.

4.3.3 Heating system

4.3.3.1 The heating system is reasonably and compactly configured, and the high-temperature flue gas and the medium and low-temperature flue gas after dust removal are used in the heat transfer oil heat exchanger and fiber respectively.

Dimensional drying, reducing direct emission of flue gas and reducing heat loss.

4.3.3.2 The thermal energy center shall use the bark, saw edge waste, waste board, sanding powder and other wood waste generated by the production line as fuel as much as possible.

Replace purchased fuel.

4.3.3.3 Thermal equipment and pipelines should be well insulated.

6.1 Economic operation

6.1.1 The economic operation evaluation should be carried out under the conditions of normal fiberboard production and stable equipment operating conditions and should be adapted to the production process.

6.1.2 The economic operation evaluation of fiberboard production shall meet the requirements of LY/T 4151.

6.1.3 The economic operation evaluation of the enterprise's power supply and distribution system shall meet the requirements of GB 50052, GB 50053, GB 50054 and GB/T3485.

6.1.4 The economic operation evaluation of the compressed air system shall meet the requirements of GB 19153.

6.1.5 The economic operation evaluation of the dust removal system shall comply with the regulations of LY/T 1862.

6.1.6 The economic operation evaluation of the key motors on the equipment should meet the requirements of GB/T12497.

6.2 Comprehensive evaluation

6.2.1 Fiberboard can meet the requirements of 6.1.2, 6.1.3, 6.1.4, 6.1.5, 6.1.6 and 6.1.7 at the same time during normal production, and meet the relevant requirements.

The relevant standards of economy, excellence, etc. are equivalent to the high-level evaluation requirements, and they are assessed as production economy and operation economy.

6.2.2 During the normal production of fiberboard, it can meet the requirements of 6.1.2, 6.1.3, 6.1.4, 6.1.5, 6.1.6 and 6.1.7 at the same time and meet the relevant requirements.

If the relevant standards are reasonable, good, etc., which are equivalent to the requirements of medium-level evaluation, it is assessed as reasonable production and economic operation.

6.2.3 Fiberboard can meet the requirements of 6.1.2, 6.1.3, 6.1.4, 6.1.5, 6.1.6 and 6.1.7 at the same time during normal production, and meet the relevant requirements.

Low-level evaluation requirements such as qualified standards and target limit values are assessed as qualified for production and economic operation.

6.2.4 During the normal production of fiberboard, if any of 6.1.2, 6.1.3, 6.1.4, 6.1.5, 6.1.6 and 6.1.7 does not meet the requirements or if it is assessed as uneconomical, unqualified, or lower than the target limit value by relevant standards, it is assessed as unqualified for economic operation of production.