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This standard is established for the first time.
Annex A of this standard is normative, and Annex B is informative.
This standard was proposed by and is under the jurisdiction of National Technical Committee on Boilers and Pressure Vessels of Standardization Administration of China (SAC/TC 262).
This standard was drafted and examined by the Subcommittee on Heat Exchanger of National Technical Committee on Boilers and Pressure Vessels of Standardization Administration of China (SC5).
Main drafting organizations of this standard: Gansu Lanke Petrochemical Equipment Corp. Ltd., Shaanxi Normal University, Baotou Dongbao Lucky Gelatine Co., Ltd., Hulun Buir Sanyuan Dairy Industry Co., Ltd., Rizhao Luxin Jinhe Biochemical Group Co., Ltd., Lanzhou Energy-saving & Environmental Protection Engineering Co.,Ltd. and Jiangsu Alfa Laval (Jiangyin) Plate Heat Exchanger Co., Ltd.
Chief drafting staffs of this standard: Song Jinhu, Zhang Peishan, Qiu Nongxue, Nan Wending, Han Feng, Li Changtao, Gai Meiping and Jin Fojia
Plate Evaporator Device
板式蒸发装置
1 Scope
This standard is applicable to the plate evaporator device used during evaporation and production process (hereinafter referred to as device).
This standard specifies the type denotation, basic parameter, technical requirements, installation requirements, debugging mode, acceptance requirements, mark, packing, transportation and storage of the device.
2 Normative References
The following referenced documents are indispensable references, only the edition cited applies. For undated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendment) applies.
GB 150 "Steel Pressure Vessels"
GB 151 "Tubular Heat Exchangers"
GB/T 983-1995 "Stainless Steel Covered Electrodes" (GB/T 983-1995, ANSI/AWSA 5.4:1992, NEQ)
GB/T 985.1-2008 "Recommended Joint Preparation for Gas Welding Manual Metal Arc Welding Gas-shield Arc Welding and Beam Welding"
GB/T 1226 -2001 "General Pressure Gauge"
GB/T 4213-2008 "Pneumatic Industrial Process Control Valves"
GB/T 5117-1995 "Carbon Steel Covered Electrodes"(GB/T 5117-1995, ANSI/AWSA5.1:1991, EQV)
GB 7251.1-2005 "Low-voltage Switchgear and Controlgear Assemblies-Part 1: Type-tested and Partially Type-tested Assemblies"(GB 7251.1-2005, IEC 60439-1:1999, IDT)
GB/T 8163-2008 "Seamless Steel Tubes for Liquid Service"
GB/T 12235-2007 "Steel Globe Valves and Lift Check Valve for Petroleum Petrochemical and Allied Industries"(GB/T 12235-2007, BS 1873-1975(R1998), NEQ)
GB/T 12243-2005 "Spring Loaded Safety Valves"(GB/T 12243-2005, JIS B 8210:1994, MOD)
GB 12348-2008 "Emission Standard for Industrial Enterprises Noise at Boundary"
GB/T 12459-2005 "Steel Butt-welding Seamless Pipe Fittings"(GB/T 12459-2005, ASTM B 16.9:2001, MOD)
GB/T 12706-2008 "Power Cables with Extruded Insulation and Their Accessories for Rated Voltages from 1kV (Um=1.2kV) up to 35kV (Um=40.5kV)"
GB/T 13384-2008 "General Specifications for Packing of Mechanical and Electrical Product"
GB/T 14976-2002 "Stainless Steel Seamless Tubes for Fluid Transport"(GB/T 14976-2002, ASTM A2692000, NEQ)
GB/T 16907-1997 "Technical Specifications for Centrifugal Pumps-Class I"(GB/T 16907-1997, ISO 9905:1994, EQV)
GB 50236-1998 "Code for Construction and Acceptance of Field Equipment, Industrial Pipe Welding Engineering"
JB/T 5493-1991 "Resistance Strain Pressure Transducer"
JB/T 7255-2007 "Water Ring Vacuum Pumps and Compressors"
JB/T 7745-1995 "Pipeline Valves"
JB/T 8622-1997 "Specification and Calibration Table of Industrial Platinum Resistance Thermistor"
JB/T 8803-1998 Bimetallic Thermometer"
JB/T 9093-1999 "Automatic Steam Traps-Technical Specification"
HG/T 20592~20635-2009 "Steel Pipe Flanges, Gaskets and Bolting"
HG/T 21620-1986 "Sight Glass with Nozzle"
NB/T 47003.1-2009 "Steel Welded Atmospheric Pressure Vessels"
NB/47004-2009 "Plate Heat Exchanger"
SY/5037-2000 "Spiral Submerged Arc-welded Steel Pipe for Pipelines for Low Pressure Fluid Service"
3 Terms and Definitions
The following terms and definitions are applicable to this standard.
3.1 Plate evaporator device
It refers to the evaporator device composed of plate evaporator, preheater, separator, condenser, pumps, valve fittings, electric meter and control system.
3.2 Pressure
All shall be gauge pressure except noted.
3.3 Working pressure
It refers to the possible maximum pressure of any equipment under normal operating conditions.
3.4 Design pressure
It refers to the stress used for guaranteeing normal device working under corresponding design temperature, and this pressure value shall not be less than the working pressure.
3.5 Design temperature
It refers to the temperature of set equipment component under normal operating conditions and corresponding design pressure, and the value shall not be less than the possible maximum temperature of compression components surface under operating conditions. In any case, the temperature of compression component surface shall not exceed the allowable service temperature of component material.
3.6 Rising film
It refers to the film formed by heated liquid during heat transfer component flow and rising process under siphon action. If the heat transfer component of this flow is used for evaporator, it shall be distinguished as rising film evaporator.
3.7 Falling film
It refers to the film formed by heated liquid during heat transfer component flow and falling process under siphon action. If the heat transfer component of this flow is used for evaporator, it shall be distinguished as falling film evaporator.
4 Flow Illustration and Type Denotation
4.1 Flow illustration
This illustration shall take the triple effect evaporation device as the example (see Figure 1).
Explanation:
1——Feed tank; 2——Feed pump; 3——Feed preheater; 4——First effect evaporator; 5——First effect separator; 6——First effect product extraction pump; 7——Second effect evaporator; 8——Second effect separator; 9——Second effect product extraction pump;10——First effect evaporator; 11——Triple effect separator; 12——Triple effect product extraction pump; 13——Condenser; 14——Vacuum pump; 15——First effect condensated water extraction pump; 16——Second effect condensated water extraction pump; 17——Condenser condensated water extraction pump; 18——Steam trap; 19——Filter; 20——Condensed liquid separating tank
Figure 1 Process Flow Illustration of Triple Effect Plate Evaporator Device
4.2 Type composition and signification
Table 1 Control Class of Device
Class Control function
A Presssure control+temperature control+flow control+level control+intelligence capacity instrument
B A+density control
C B+PLC or computer or DCS
4.3 Type denotation
Taking the evaporative capacity as 5t/h, the device type with Class B control class shall be expressed into: BZ-5-B-III.
5 Basic Parameters
5.1 Rated evaporation of device
The rated evaporative capacity of device shall be in accordance with those specified in Table 2.
Table 2 Rated Evaporation of Device
Rated evaporative capacity, t/h First effect Second effect Triple effect Quadruple effect Quintuple effect More than sextuple effect
≤10 ≤20 ≤40 ≤80 160 >160
5.2 Design temperature and design pressure of device
The design temperature and design pressure of device shall be in accordance with those specified in Table 3.
Table 3 Design Temperature and Design Pressure of Device
Media Design temperature, ℃ Design pressure, MPa
Inlet Outlet
Working steam ≤180 - ≤1.0
Steam condensate - ≤99 ≤0.1
Concentrated media - ≥45 ≤0.2
Cooling water ≤30 ≤45 ≤0.6
5.3 Steam consumption ratio of device
The steam consumption ratio of device shall be in accordance with those specified in Table 4.
Table 4 Steam Consumption Ratio of Device
First effect Second effect Triple effect Quadruple effect Quintuple effect More than sextuple effect
Steam consumption ratio (steam/water), kg/kg
Compression without heating power ≤1 ≤0.53 ≤0.4 ≤0.3 ≤0.25 ≤0.2
Compression with heating power ≤0.53 ≤0.4 ≤0.3 ≤0.25 ≤0.2 ≤0.18
5.4 See Annex B for other basic design parameters of device.
6 Technical Requirements
6.1 General provisions
The design, fabrication, inspection and acceptance of device shall be in accordance with those specified in this standard, besides, shall comply with agreed by buyer or designated and approved relevant standard specifications and laws, meanwhile, shall meet the pattern requirements.
6.2 Plate evaporator
6.2.1 The design, fabrication, inspection and acceptance of plate evaporator shall be in accordance with those specified in Annex B.
6.2.2 THE area of plate evaporator shall be calculated according to Formula (1):
Foreword I
1 Scope
2 Normative References
3 Terms and Definitions
4 Flow Illustration and Type Denotation
5 Basic Parameters
6 Technical Requirements
7 Installation Requirements
8 Inspection, Debugging and Acceptance
9 Marking, Packing, Transportation and Storage
Annex A (Normative) Plate Evaporator
Annex B (Informative) Basic Parameters of Plate Evaporator Device
