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Regenerative cycle and low-temperature multi-effect distillation seawater desalinization thermodynamic cycling device and method

A multi-effect distillation and heat recovery cycle technology, which is applied in chemical instruments and methods, seawater treatment, heating water/sewage treatment, etc., can solve problems such as difficult extraction pressure

Active Publication Date: 2011-05-18
青岛艳阳天环保科技有限公司
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Problems solved by technology

Because the steam extraction pressure of the steam turbine in the power plant is difficult to match the parameters required by the distillation seawater desalination device

Method used

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  • Regenerative cycle and low-temperature multi-effect distillation seawater desalinization thermodynamic cycling device and method
  • Regenerative cycle and low-temperature multi-effect distillation seawater desalinization thermodynamic cycling device and method
  • Regenerative cycle and low-temperature multi-effect distillation seawater desalinization thermodynamic cycling device and method

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Embodiment Construction

[0059] The composite thermodynamic cycle system provided by the present invention combines the chemical heat recovery cycle and the low-temperature multi-effect distillation seawater desalination system. The chemical heat recovery cycle (top cycle) uses air as the circulating working medium and introduces fuel chemical reforming reaction on the basis of the Brayton cycle. , the excess flue gas waste heat heats water to generate power steam, drives the low-temperature multi-effect distillation seawater desalination system (bottom cycle), part of the generated fresh water is sent back to the top cycle for the reforming reaction, and the rest is output as the product to realize the system work and water. Joint supply, the main equipment includes:

[0060] Air compressor: Boost the air to the highest pressure of the Brayton cycle;

[0061] Methane compressor: When the fuel is methane, the methane gas is boosted to the pressure of the reforming reaction (considering the pressure lo...

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Abstract

The invention discloses a regenerative cycle and low-temperature multi-effect distillation seawater desalinization thermodynamic cycling device, which is formed by coupling a chemical regenerative cycle and a low-temperature multi-effect distillation seawater desalinization system, wherein the flue gas waste heat of the chemical regenerative cycle is used for producing steam power to drive the low-temperature multi-effect distillation seawater desalinization system; fresh water produced by the low-temperature multi-effect distillation seawater desalinization system is supplied to satisfy the needs of reaction in the chemical regenerative cycle; the advantages of the chemical regenerative cycle and the low-temperature multi-effect distillation seawater desalinization system are complemented; and the system realizes integrated optimization. In the process of recycling the flue gas waste heat, a regenerator, a reformer and a waste heat boiler are arranged according to temperature corresponding and energy cascade-utilization principles, and as reforming temperatures of different fuels such as natural gas and methanol, a system structure is required to be correspondingly regulated to realize optimal heat exchange matching. Compared with a separate production system with the same output, the system can improve the efficiency by 5 to 9 percent and save 11 to 19 percent of fossil fuels. Therefore, the device has high economy and vast engineering application prospect.

Description

technical field [0001] The invention relates to a thermodynamic cycle device combined with a chemical recuperation cycle and a low-temperature multi-effect distillation seawater desalination system. [0002] The invention also relates to a method for realizing chemical reheating cycle and low-temperature multi-effect distillation seawater desalination by using the device. Background technique [0003] At present, the technologies related to the present invention mainly include the utilization of chemical regenerative cycle power generation technology and low-temperature multi-effect distillation seawater desalination technology. The development status and system characteristics of their respective technologies are as follows: [0004] 1) Utilize chemical regeneration cycle power generation technology [0005] The chemical recuperation cycle introduces the chemical reforming reaction of fuel on the basis of the gas turbine Brayton cycle. When the fuel is methane, the reactio...

Claims

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Application Information

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IPC IPC(8): C01B3/32C01B3/34C02F1/04C02F103/08
CPCY02A20/124Y02P20/129
Inventor 张娜罗尘丁蔡睿贤
Owner 青岛艳阳天环保科技有限公司
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