scholarly journals New Control Systems Facilitate Reconfiguring Aeroderivative Gas Turbines for Cogeneration

1996 ◽  
Author(s):  
David Moore
Keyword(s):  
New Zealand ◽  
Control Systems ◽  
Gas Turbines ◽  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Waste Heat ◽  
Heat Recovery Boiler ◽  
Total System ◽  
Paper Briefly ◽  
Dairy Plant

This paper briefly sets out the requirements for additional steam capacity at Anchor Products dairy plant at Te Awamutu in New Zealand and the reasons for choosing to use a relocated Turbo Power & Marine Twin Pac with a new waste heat recovery boiler together with an existing coal fired boiler to meet this demand. The paper then discusses the decision to replace the gas turbine and generator controls in their entirety, their integration with the controls for the new and existing boilers, and the architecture adopted for the total system. The philosophy of the control of the plant is then developed which leads to detailed discussion of the implementation of various modes of control of the plant, including, cogeneration control, co-ordinated control peaking control and compensate control and the methods of changing between the various modes of control. Finally, the paper includes a section on commissioning the plant.

scholarly journals Model Predictive Control of Offshore Power Stations With Waste Heat Recovery

2016 ◽  
Vol 138 (7) ◽  
Author(s):  
Leonardo Pierobon ◽  
Richard Chan ◽  
Xiangan Li ◽  
Krishna Iyengar ◽  
Fredrik Haglind ◽  
...  
Keyword(s):  
Model Predictive Control ◽  
Control Systems ◽  
Predictive Control ◽  
Gas Turbines ◽  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Oil And Gas ◽  
Waste Heat ◽  
Integral Control ◽  
Power Stations

The implementation of waste heat recovery units on oil and gas offshore platforms demands advances in both design methods and control systems. Model-based control algorithms can play an important role in the operation of offshore power stations. A novel regulator based on a linear model predictive control (MPC) coupled with a steady-state performance optimizer has been developed in the simulink language and is documented in the paper. The test case is the regulation of a power system serving an oil and gas platform in the Norwegian Sea. One of the three gas turbines is combined with an organic Rankine cycle (ORC) turbogenerator to increase the energy conversion efficiency. Results show a potential reduction of frequency drop up to 40% for a step in the load set-point of 4 MW, compared to proportional–integral control systems. Fuel savings in the range of 2–3% are also expected by optimizing on-the-fly the thermal efficiency of the plant.

scholarly journals Evaluation and analysis of exergoeconomic performance for the calcination process of green petroleum coke in vertical shaft kiln

2021 ◽  
pp. 294-294
Author(s):  
Peng Li ◽  
Baokuan Li ◽  
Zhongqiu Liu ◽  
Wenjie Rong
Keyword(s):  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Waste Heat ◽  
Shaft Furnace ◽  
Exergy Efficiency ◽  
Heat Recovery Boiler ◽  
Vertical Shaft ◽  
Exergy Destruction ◽  
Calcination Process ◽  
Recovery Boiler

The main objective of this paper is to establish a mathematical framework to analyze the complex thermal economic performance of the calcination process. To find the factors affecting exergy efficiency loss, different exergy destruction is investigated in detail. Furthermore, the exergy flow cost model for exergy cost saving has also been developed. The results show that the vertical shaft furnace is a self-sufficiency equipment without additional fuel required, but the overall exergy destruction accounts for 54.11% of the total exergy input. In addition, the energy efficiency of the waste heat recovery boiler and thermal deaerator are 83.52% and 96.40%, whereas the exergy efficiency of the two equipment are 65.98% and 94.27%. Furthermore, the import exergy flow cost of vertical shaft furnace, waste heat recovery boiler and thermal deaerator are 366.5197 RMB/MJ, 0.1426 RMB/MJ and 0.0020RMB/MJ, respectively. Based on the result, several suggestions were proposed to improve the exergoeconomic performance. Assessing the performance of suggested improvements, the total exergy destruction of vertical shaft furnace is reduced to 134.34 GJ/h and the exergy efficiency of waste heat recovery boiler is raised up to 66.02%. Moreover, the import exergy flow cost of the three different equipment is reduced to 0.0329 RMB/MJ, 0.1304 RMB/MJ and 0.0002 RMB/MJ, respectively.

scholarly journals PROTECTION AGAINST CORROSION OF THE TECHNOLOGICAL EQUIPMENT OF THE OIL REFINING ENTERPRISE

2020 ◽  
Vol 2020 (1) ◽  
pp. 23-24
Author(s):  
Vladislav Bichevin ◽  
Nina Sosnovskaya
Keyword(s):  
Heat Exchangers ◽  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Waste Heat ◽  
Oil Refining ◽  
Heat Recovery Boiler ◽  
Technological Equipment ◽  
Slowing Down ◽  
Process Heat ◽  
Recovery Boiler

A method for slowing down the corrosion of heat exchangers in the T-104 and T102 heat recovery boiler blocks is considered. PK-1 Aminate was selected as the most suitable inhibitor for process heat exchangers of the waste heat recovery boiler unit

scholarly journals Waste Heat Recovery for Offshore Applications

2012 ◽  
Author(s):  
Leonardo Pierobon ◽  
Rambabu Kandepu ◽  
Fredrik Haglind
Keyword(s):  
Gas Turbine ◽  
Thermal Energy ◽  
Gas Turbines ◽  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Oil And Gas ◽  
Waste Heat ◽  
Offshore Platforms ◽  
Organic Rankine Cycles ◽  
Heat Loads

With increasing incentives for reducing the CO2 emissions offshore, optimization of energy usage on offshore platforms has become a focus area. Most of offshore oil and gas platforms use gas turbines to support the electrical demand on the platform. It is common to operate a gas turbine mostly under part-load conditions most of the time in order to accommodate any short term peak loads. Gas turbines with flexibility with respect to fuel type, resulting in low turbine inlet and exhaust gas temperatures, are often employed. The typical gas turbine efficiency for an offshore application might vary in the range 20–30%. There are several technologies available for onshore gas turbines (and low/medium heat sources) to convert the waste heat into electricity. For offshore applications it is not economical and practical to have a steam bottoming cycle to increase the efficiency of electricity production, due to low gas turbine outlet temperature, space and weight restrictions and the need for make-up water. A more promising option for use offshore is organic Rankine cycles (ORC). Moreover, several oil and gas platforms are equipped with waste heat recovery units to recover a part of the thermal energy in the gas turbine off-gas using heat exchangers, and the recovered thermal energy acts as heat source for some of the heat loads on the platform. The amount of the recovered thermal energy depends on the heat loads and thus the full potential of waste heat recovery units may not be utilized. In present paper, a review of the technologies available for waste heat recovery offshore is made. Further, the challenges of implementing these technologies on offshore platforms are discussed from a practical point of view. Performance estimations are made for a number of combined cycles consisting of a gas turbine typically used offshore and organic Rankine cycles employing different working fluids; an optimal media is then suggested based on efficiency, weight and space considerations. The paper concludes with suggestions for further research within the field of waste heat recovery for offshore applications.

Optimization of Waste Heat Recovery Boiler of a Combined Cycle Power Plant

1996 ◽  
Vol 118 (3) ◽  
pp. 561-564 ◽  
Author(s):  
B. Seyedan ◽  
P. L. Dhar ◽  
R. R. Gaur ◽  
G. S. Bindra
Keyword(s):  
Power Plant ◽  
Optimum Design ◽  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Waste Heat ◽  
Combined Cycle ◽  
Heat Recovery Boiler ◽  
Combined Cycle Power Plant ◽  
Recovery Boiler

In the present work a procedure for optimum design of waste heat recovery boiler of a combined cycle power plant has been developed. This method enables the optimization of waste heat recovery boiler independent of the rest of the system and the design thus obtained can directly be employed in an existing plant.

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