 |
Analysis centre
SMART Convection - Focused on the deposit situation in the convection area to optimise the boiler cleaning |
|
SMART Convection:
Highly specialised expert for the convection area
The task of SMART Convection is the continuous monitoring and evaluation of the deposit situation in the convection area and the definition of appropriate, demand-driven cleaning actions.
SMART Convection receives the information concerning the deposit state from the preceding evaluation units TDM, SHFM and Matrix Clean. SHFM is designed for the process specific characteristic of vertical heat exchangers. Matrix Clean is designed for use in horizontal mounted heat exchanger bundles. All analysis modules can be combined.
SMART Convection receives this information and converts it into corresponding cleaning parameters so that only the necessary sootblowers are identified and demand-driven execution parameters are defined. All parameterised cleaning actions have the status of a recommendation which is forwarded to the CLEANING MANAGER for checking and final decision, i.e. activation of the boiler cleaning devices. |
|
TDM:
Thermodynamic modelling in real time
Thermodynamic modelling (TDM) works with current process and measuring data, mainly from the water/steam circuit and the flue gas flow. By considering the boiler load and other boundary conditions, TDM calculates the heat, fuel and flue gas flows. These calculations are carried out in parallel and as such, take place continuously within seconds. Among other things, TDM shows the flue gas temperature of various levels, the furnace exit gas temperature, boiler heat output and efficiency as well as the coal mass flow. TDM is based on the proven technology from the Finish thermodynamics specialist Endat. |
|
Matrix Clean:
Localisation of deposits in heat exchanger bundles
All SMART Gauge sensors mounted on the supporting pipes of the heat exchanger bundles send the directly measured weight data to the Matrix Clean software module for evaluation. By comparing the weight of the deposits, local differences can be identified.
Combined with the calculated heat transfer values of the single heat exchanger bundles by TDM, it is known where exactly in the bundle the deposit is located. As such, all necessary information is available to select required sootblowers and define demand-driven cleaning parameters. The activation of a complete group of sootblowers is no longer needed.
|
|
SHFM – Super Heating Fouling Monitor:
Localisation of deposits in vertical heat exchangers
The SMART Gauge sensors mounted on the hanger rods of vertical hanging superheaters send the weight data that has been directly measured to the SHFM software module for analysis.
As each package of this kind of superheaters is fastened to its own hanger rod, the result of the direct weight measurement can be transferred 1:1 to the position of the deposit within the superheater. SHFM forwards this information to SMART Convection. SMART Convection defines the required cleaning parameters and identifies the relevant sootblowers. When determining the relevant sootblower, SMART Convection follows a selective procedure. The ongoing measurement of the SMART Gauge sensors is now used as a direct feedback about the success of the cleaning. If the weight is reduced, then the selected sootblower has reached the deposit. In case of stagnating or increasing weight, the deposit is at a different level and the sootblower located next to this is selected.
As the system recognises the results from each cleaning action, a self-learning process is set up. |
|
|
|
|
Installation
Areas: |
|
|
