Numerical Simulation on Liquefied Natural Gas Submerged Combustion Vaporizer

doi:10.7652/xjtuxb201601011

您当前的位置：

首页 >

文章列表页 >

Numerical Simulation on Liquefied Natural Gas Submerged Combustion Vaporizer

更新时间：2025-07-09

- Numerical Simulation on Liquefied Natural Gas Submerged Combustion Vaporizer
- Vol. 50, Issue 1, Pages: 67-71+114(2016)
- 作者机构：
  
  西安交通大学热流科学与工程教育部重点实验室,西安,710049
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb201601011
  CLC： TK124
- Online First：10 January 2016，
  
  Published：2016
- 稿件说明：
移动端阅览
Numerical Simulation on Liquefied Natural Gas Submerged Combustion Vaporizer[J]. 2016, 50(1): 67-71+114.
DOI：

Numerical Simulation on Liquefied Natural Gas Submerged Combustion Vaporizer[J]. 2016, 50(1): 67-71+114. DOI： 10.7652/xjtuxb201601011.

摘要

为了考察在一定设计尺寸下液化天然气(LNG)浸没燃烧式气化系统的天然气出口温度能否达到生产要求

建立了对整个浸没燃烧式气化器(包含燃烧室、下气管和LNG换热器3部分)中一系列流动和传热的数值计算模型。在燃烧室中

采用灰气体加权和模型(WSGGM)计算烟气的吸收系数

利用DO模型求解辐射传递方程

并在考虑对流和辐射的混合传热作用下计算出火焰罩的壁面温度以及烟气、二次空气出口的平均温度; 在LNG换热器中

对流体物性剧烈变化的管程进行分段处理并采用两相流体模型来模拟壳程中气液两相的流动和传热过程

在分别获得管壳两侧的平均传热系数后用以计算总的换热系数。所获得的管程和壳程对流换热系数和关联式与已有的文献值符合良好。壳程入口气体温度在500～700 ℃的范围内变动时

壳程出口气体温度与壳程水浴平均温度略微升高

同时壳程水浴湍动能降低

换热系数稍有减小。模拟获得的天然气出口温度可维持在15 ℃左右

能满足生产需要。

Abstract

To predict the natural gas outlet temperature of a liquefied natural gas(LNG)submerged combustion vaporizer(SCV)

this paper establishes a complete model for the numerical computation of the fluid flow and heat transfer in the whole SCV system

including the combustion chamber

down comer and LNG heat exchanger. For the combustion chamber

weighted-sum gray gas model(WSGGM)is used to calculate the gas absorption coefficient and DO model is used to solve RTE. The flow and heat transfer behavior is then obtained considering radiation and convection. For the LNG heat exchanger

a segmentation treatment is used for the coiled tube because of the drastically changing fluid properties. The two-phase fluid model is used to deal with the gas-liquid two-phase flow and heat transfer process for the shell-side and the total heat transfer coefficient is then calculated. The tube-side and shell-side heat transfer coefficients are well consistent with the results of previous studies. When the shell-side inlet gas temperature varies within the range of 500-700 ℃

the outlet gas temperature and the average water bath temperature slightly increase and the turbulent kinetic energy and heat transfer coefficient slightly decrease. Under the practical operation conditions

the LNG outlet temperature maintains at 15 ℃ or so

which can meet the production requirement.

关键词

Keywords

references

尹星懿. 浸没燃烧式气化器原理分析及方案优化 [J]. 城市燃气, 2014(2): 9-12.

YIN Xingyi. The principle analysis and designation improvement of submerged combustion vaporizer [J]. Gas Technology, 2014(2): 9-12.

程云东. 浸没燃烧式气化器的设计缺陷及改进方法 [J]. 油气储运, 2014, 33(3): 292-294.

CHENG Yundong. Design defects and modification of submerged combustion vaporizer [J]. Oil Gas Storage and Transportation, 2014, 33(3): 292-294.

窦兴华. LNG沉浸式汽化器流动传热过程数值模拟 [D]. 大连: 大连理工大学, 2007.

于国杰. LNG沉浸式燃烧型气化器数值模拟 [D]. 大连: 大连理工大学, 2009.

孙海峰. 浸没燃烧式LNG气化器的传热计算与数值仿真 [D]. 北京: 北京建筑大学, 2014.

李仲珍, 郭少龙, 陶文铨. 超临界LNG管内流动与换热特性研究 [J]. 工程热物理学报, 2013, 34(12): 025.

LI Zhongzhen, GUO Shaolong, TAO Wenquan. Studies of supercritical convective heat transfer of LNG in tube [J]. Journal of Engineering Thermophysics, 2013, 34(12): 025.

杨世铭, 陶文铨. 传热学 [M]. 4版. 北京: 高等教育出版社, 2006.

李冬. O2/HO2燃烧条件下气体辐射特性参数计算及数值模拟 [D]. 武汉: 华中科技大学, 2008.[本刊相关文献链接]

杨辉著,文键,童欣,等.板翅式换热器锯齿型翅片参数的遗传算法优化研究.2015,49(12):90-96.[doi:10.7652/xjtuxb 201512015]

王斯民,王萌萌,顾昕,等.螺旋折流板换热器结构参数多目标优化的数值模拟.2015,49(11):14-19.[doi:10.7652/xjtuxb201511003]

季家东,葛培琪,毕文波.换热器内弹性管束流体组合诱导振动响应的数值分析.2015,49(9):24-29.[doi:10.7652/xjtuxb201509005]

张凡,李兆辉,李晓宇,等.不同材料翅片管换热器特性的试验研究.2015,49(5):62-67.[doi:10.7652/xjtuxb201505010]

文键,杨辉著,王斯民,等.旋梯式螺旋折流板换热器优化结构的数值模拟.2014,48(11):8-14.[doi:10.7652/xjtuxb 201411002]

杨卫卫,曹兴起,何雅玲,等.一种带中间换热器的双热源高温热泵系统.2014,48(11):70-74.[doi:10.7652/xjtuxb2014 11012]

文键,杨辉著,杜冬冬,等.螺旋折流板换热器换热强化的数值研究.2014,48(9):43-48.[doi:10.7652/xjtuxb201409008]

韩辉,何雅玲,唐桂华.硫酸蒸气在换热器表面沉积特性的数值研究.2013,47(11):7-12.[doi:10.7652/xjtuxb201311002]

王斯民,文键.无短路区新型螺旋折流板换热器换热性能的实验研究.2012,46(9):12-15.[doi:10.7652/xjtuxb201209 003]

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Study of the Mechanism of Electrostatic Accumulation and Current Density Distribution Characteristics During Liquid Hydrogen Pipeline Transportation

Numerical Simulation of Space Charge Distribution Characteristics of Polyimide Materials under X-Ray Irradiation

Numerical Simulation Study on Geothermal Extraction Characteristics of Supercritical CO2 in Heterogeneous Fractures

Action Mechanism of Heat Transfer between the Working Medium and the Impeller on Aerodynamic Performance and Flow Characteristics of Radial Inflow Turbines with Supercritical Carbon Dioxide

Analysis of the Attached Vortex Model for the Flow Characteristics of Wing Near-Field Wakes

Related Author

SUN Wenhao

LIU Hongbao

WANG Lei

QING Ziyou

LI Zhuolun

MA Yuan

LI Yanzhong

ZHONG Hui

Related Institution

School of Energy and Power Engineering，Xi’an Jiaotong University

Aerospace System Engineering Shanghai

School of Electrical Engineering，Xi’an Jiaotong University

Northwest Institute of Nuclear Technology

Institute of Electronic Engineering，China Academy of Engineering Physics

⁰