立國工程股份有限公司 LEEKUO |煉油石化設備、熱交換器、纏管式熱交換器、加熱爐

Energy-Saving & Process Optimization

Energy Efficiency Revamping Project Planning & Consulting Service

Consulting service for the choice of the most suitable solution & type of heat exchanger, in order to:

Economically

higher energy efficiency, lower operating expense.

Operationally

the solution of long-term leakage from existing equipment.

Maintenance

minimizes the possibility and time of shutdown maintenance caused by fouling.

Reliability

the inherent safer equipment improves the reliability.

The improvement of the heat recovery efficiency at the crucial position of process, such as the reactor feed/effluent and the top of the distillation unit etc.

The multiple parallel/in series conventional shell and tube heat exchangers were replaced by one set of spiral tube heat exchanger^{Note 1}through our consulting and planning. The integration simplifies the installation space and the surrounding structure and piping.

The heat integration service for partial or whole process.

Consulting service for other process revamping project.

Five Major Benefits for Spiral Tube Heat Exchanger (STHE)

Zero-Leakage

The robustness feature minimizes the possibility of equipment broken and leakage.

Energy Saving

The heat transfer efficiency of STHE is 40% to 50% better than the conventional shell & tube heat exchanger. The spiral tube configuration enables the fluid to be continuously turbulent in both hot & cold side (shell side and tube side). In addition, it has wide area for heat transfer.

Simplicity

The multiple parallel/in series conventional shell and tube heat exchangers replaced by one set of spiral tube heat exchanger are feasible, which simplifies the installation space and the surrounding structure and piping.

Resilience to Process Upsets

The STHE is inherent robust thanks to its spring shape configuration, which can sustain the sudden violent fluctuation of high pressure and temperature caused by emergency stop or other operation incident.

Anti-Fouling

No baffle design, no dead end in the shell side and the unique tube bundle structure enables the fluid to be continuously turbulent for fluid, which provides excellent anti-fouling feature.

Note 1: The spiral tube heat exchanger is manufactured and provided by Zhenhai Petrochemical Jianan Engineering Co., LTD

Spiral Tube Heat Exchanger

Single Stream Product Introduction

The length of heat exchange tube of a single equipment can be more than 130M，Maximize the heat exchange efficiency of a single device.

Single-Stream Project Case Study – Leading Ethylene Glycol (EG) Plant in Taiwan

Plant EG (Ethylene Glycol) Production Facility

Original Equipment 5 Gasketed Plate Heat Exchangers – Cooling Water Circuit (Commissioned in 2019)

Improvement Request

1.Frequent leakage due to gasket corrosion

2.Annual gasket replacement costs reaching approx. NT$4.5 million

3.Raise energy efficiency and simplify piping system

Improvement Results

4.Annual CO₂ emissions reduced by 6,716 metric tons

5.Equivalent to the annual carbon absorption of 18.8 Daan Forest Park

Multi-stream product introduction

The unique design allows multiple tube-side inlet and outlet nozzles, allowing more than two cold fluids to exchange heat at the same time. When planning heat recovery and integration, it helps to streamline the number of equipment and achieve the best heat exchange efficiency.

Multi-Stream Case Study – Leading Petrochemical PC Plant in Taiwan

Plant A Petrochemical PC Plant in Taiwan –Tower Top Steam Heat Recovery (Commissioned in 2022)

Original Equipment 15 sets shell-and-tube heat exchangers

Improvement Request

1. Requirement for ESG compliance, energy-saving & carbon reduction goals

2. Traditional shell-and-tube exchangers require large footprint and high piping/structural cost

3. A multi-stream Spiral Tube Heat Exchanger can simultaneously heat up two cooling flows

Improvement Results

Annual CO₂ emissions reduced by8,400 metric tons

Equivalent to the annual carbon absorption of23.5Daan Forest Park