Numerical simulation study on performance optimization of desuperheater

Liang, Huizhen; Zhao, Binjie; Huang, Changcheng; Song, Hao; Jiang, Xiukun

doi:10.1016/j.egyr.2021.04.023

Cited by 8 publications

(6 citation statements)

References 5 publications

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“…Comparison of the average temperature change of steam from the inlet to the outlet of the desuperheater shows that the trend is approximately the same, although there is an error of about 1K between the two curves. The results of the current study are in good agreement with those of Huizhen Liang [10], indicating that the numerical method used in this study can accurately simulate the operating process of the desuperheater.…”

Section: Methods Validationsupporting

confidence: 80%

Numerical analysis of heat transfer characteristics of mixing element reinforced desuperheater

Gong,

Zhan

2024

Ninth International Conference on Energy Materials and Electrical Engineering (ICEMEE 2023)

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An optimization scheme for installing static mixing element in desuperheater is numerical proposed to improve the poor desuperheater effect of traditional desuperheater in limited distance pipeline. By comparing and analyzing the working process and temperature reduction mechanism of the mixed fluid in the traditional and the new desuperheater, the results show that the mixing elements further facilitate the mixing of liquid droplets and superheated vapors, effectively improve the evaporation rate of the droplet, and effectively complete the temperature reduction process of high temperature and high pressure superheated steam. In the same distance of the pipe, the new desuperheater temperature reduction range is increased, and the temperature inhomogeneity coefficient is reduced by about 90%.

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Section: Methods Validationsupporting

confidence: 80%

Numerical analysis of heat transfer characteristics of mixing element reinforced desuperheater

Gong,

Zhan

2024

Ninth International Conference on Energy Materials and Electrical Engineering (ICEMEE 2023)

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“…where r is the radius of the droplet before deformation, μ l is the droplet viscosity, C F , C K , C d is a dimensionless constant derived from experiments and theory and is taken as 32 A significant theory to determine whether droplets can be carried out of the wellhead by the gas is the maximum droplet theory, which states that no liquid loading will occur at the bottom of the well as long as the gas can carry the largest diameter droplet to the surface. 33 The minimum gas velocity that lifts the largest diameter droplet to the ground is called the critical liquid-carrying flow rate, based on Newton's second law and considering only the force in the vertical direction (Equations 9 and 10),…”

Section: The Droplet Breakage and Critical Liquid-carrying Flow Rate ...mentioning

confidence: 99%

“…Droplets are subjected to gas phase traction during transport inside the jet pump and are further fragmented when they flow through the throat or collide with the jet pump wall. The droplet size has a great influence on the liquid‐carrying performance of the gas well, and the specific droplet breakage model can be expressed as follows,

F{\boldsymbol{ \mbox{-} }}K{{\boldsymbol{x}}}_{l}-d\frac{{\rm{d}}{{\boldsymbol{x}}}_{l}}{{\rm{d}}t}=m\frac{{{\rm{d}}}^{2}{{\boldsymbol{x}}}_{l}}{{\rm{d}}{t}^{2}},

where F , K , d , and m are the coefficients of the equation, derived from the Taylor analogy,

\frac{F}{m}={C}_{F}\frac{{\rho }_{g}{{{\boldsymbol{u}}}_{l}}^{2}}{{\rho }_{l}r},

\frac{K}{m}={C}_{K}\frac{\sigma }{{\rho }_{l}{r}^{3}},

\frac{d}{m}={C}_{d}\frac{{\mu }_{l}}{{\rho }_{l}{r}^{2}},

where r is the radius of the droplet before deformation,

\,{\mu }_{l}\,

is the droplet viscosity, C F , C K , C d is a dimensionless constant derived from experiments and theory and is taken as

\,

C F = 1/3, C K = 8, C d = 5 32 …”

Section: Mathematical Modelsmentioning

confidence: 99%

Study on improving liquid carrying performance of annular jet pump gas well with static mixer

Liang,

Li,

et al. 2023

Energy Science & Engineering

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In the process of natural gas extraction, the phenomenon of liquid loading will affect the efficiency of gas well extraction and reduce the life of the well. Compared with conventional drainage gas extraction technology, the jet pump can not only reduce the bottom back pressure and ensure the stable production of gas reservoirs but also promote the final recovery rate. Since the jet pump relies on the interaction between fluid particles to transfer energy, the energy loss is large and the efficiency is low. To maximize the advantages of the gas‐driven jet pump, this study innovatively combines a static mixer with an annular jet pump. Utilizing the cyclonic effect produced by the static mixer, the original gas‐liquid axial motion is transformed into a stronger vortex motion, and the liquid droplets are changed into a liquid film that is easier to carry, which significantly improves the discharge efficiency of the jet pump. This study uses a combination of numerical simulation and experimental analysis to compare the associated effects of the new annular jet pump (NAJP) and the conventional annular jet pump (CAJP) on the liquid‐carrying performance of gas wells in terms of cyclonic effect, droplet breakage ratio, and pump efficiency. The results show that, compared with CAJP, NAJP increases the mass flow rate of the sucked fluid. The droplet breakage ratio increases by 15.4% year‐on‐year, while the critical liquid‐carrying flow rate is reduced by about 10.7%, resulting in a maximum pumping efficiency of 37%, an increase of about 30.7% year‐on‐year. At the same time, the reduction of the energy coefficient means lower energy consumption. In summary, NAJP is better than CAJP in terms of liquid‐carrying effect and efficiency.

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“…2. The juice must be heated at a temperature of 125 °C to reduce the formation of colour and damage to the sucrose structure The addition of water for the desuperheating process will cause an increase in the amount of steam produced for the mass balance process [14]. This phenomenon can be explained in the Fig.…”

Section: Thermodynamics Re-engineering IIImentioning

confidence: 99%

Applied energy and mass balance optimization re-engineering: case on Industri Gula Glenmore, Ltd.

Harnowo¹,

Hidayat²,

Gupta³

2022

JEATech

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The Glenmore Sugar Industry, Ltd. is designed for 8000 TCD production or 273 TPH. The process required approximately 136 TPH based on the Steam on Cane (SoC) 50%. As the factory's primary input, Sugar Cane cannot supply 8000 TCD Factory Capacity, so 6000 TCD is chosen as an alternative. After commissioning, a lack of steam for servicing the process occurred because the Turbine at full load required 7,6 Kg/kWh. Desuperheater supports the additional steam for the process, which is only 20 TPH. Meanwhile, the steam from the turbine supplies 84 TPH. The need for 32 TPH must be solved, and a specific strategy should be prepared. The Applied Thermodynamics Re-Engineering is a potential method that can be applied in which the findings show that the deficit of 32 TPH steam for the process can be solved precisely.

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Numerical simulation study on performance optimization of desuperheater

Cited by 8 publications

References 5 publications

Numerical analysis of heat transfer characteristics of mixing element reinforced desuperheater

Numerical analysis of heat transfer characteristics of mixing element reinforced desuperheater

Study on improving liquid carrying performance of annular jet pump gas well with static mixer

Applied energy and mass balance optimization re-engineering: case on Industri Gula Glenmore, Ltd.

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