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Novel cargo oil temperature control system and method for chemical cargo ship

A chemical tanker and temperature control system technology, applied in the field of ship temperature control, can solve the problems of high price, increased shipbuilding cost and difficulty of maintenance and repair, and achieve the effect of easy maintenance, convenient temperature control and consistent temperature

Pending Publication Date: 2018-05-11
南通象屿海洋装备有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] This design needs to be equipped with more coolers (SUS316L, and requires chemical corrosion resistance), and when checking and maintaining equipment, personnel need to enter the cabin for inspection and maintenance when the interior of the cargo compartment is fully cleaned and ventilated
Moreover, there is only one monopoly in the world, and the price is expensive, which increases the cost of shipbuilding and the difficulty of maintenance and overhaul

Method used

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  • Novel cargo oil temperature control system and method for chemical cargo ship
  • Novel cargo oil temperature control system and method for chemical cargo ship

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Such as figure 1As shown, a novel cargo oil temperature control system for chemical tankers includes a liquid cargo tank 1, a deck 40 is provided on the top of the liquid cargo tank 1, and a coil 2 is provided at the bottom of the liquid cargo tank 1, and the coil 2 One end of the coil is connected with a water inlet pipe 3, and the other end of the coil 2 is connected with an outlet pipe 4, and the water inlet pipe 2 is respectively connected with the water outlet pipe 5 of the chiller and the water outlet pipe 6 of the heating equipment located outside the liquid cargo tank 1. The water outlet pipe 5 of the unit is provided with a first water outlet valve 7, the heating equipment outlet pipe 6 is provided with a second water outlet valve 8, and the water outlet positions of the first water outlet valve 7 and the second water outlet valve 8 are respectively provided with water outlet valves. Blind plate 13; the outlet pipe 4 is respectively connected to the water inlet...

Embodiment 2

[0034] When the liquid cargo in the liquid cargo tank 1 is cooled by the coil 2, there is a temperature difference between the upper liquid and the lower liquid. In order to solve the above problems, the present invention improves the cargo oil pump for loading and unloading cargo in the liquid cargo tank 1, and the specific scheme is as follows:

[0035] Such as figure 2 As shown, a cooling and heating cycle device 27 is provided in the liquid cargo tank, and the cooling and heating cycle device 27 includes a cargo oil pump. The pump head 28 of the cargo oil pump is located at the bottom of the liquid cargo tank 1, and a liquid suction well is arranged below the pump head 28 29. A cargo oil pump liquid cargo pipe 30 is connected above the pump head 28, and the cargo oil pump liquid cargo pipe 30 extends to the top of the liquid cargo tank 1 and passes through the deck 40 of the liquid cargo tank 1 and the liquid cargo main pipe 31 on the deck 40 The liquid cargo main pipe 3...

Embodiment 3

[0046] System design conditions:

[0047] The outside temperature is 45°C and the seawater temperature is 32°C. The temperature of the two largest cargo tanks (No.6 cargo tanks (center left and center right)) is maintained below 20°C, and the temperature of the cargo loaded into the tank is considered to be 20°C. Peripheral empty cabin temperature: calculated at 35°C, considering the heat transfer of the empty cabin and deck, the heat transfer coefficient of the bulkhead is adjusted to 5w / m2K.

[0048] Features of propylene oxide for cargo hold loading:

[0049] Specific gravity: 0.859t / m3, loading rate: 0.98, specific heat: 1.95KJ / kg.℃.

[0050] The specific implementation plan of the system:

[0051] Considering the influence of the sun's radiant heat, the horizontal deck is painted with dark paint, and the heat transfer coefficient of the remaining compartments is adjusted to 5w / m2K according to the heat transfer coefficient of the bulkhead.

[0052] The total heat load ...

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Abstract

The invention provides a novel cargo oil temperature control system for a chemical cargo ship. The novel cargo oil temperature control system comprises a liquid cargo tank. A coil pipe is arranged atthe bottom of the liquid cargo tank. One end of the coil pipe is connected with a water inlet pipe, and the other end of the coil pipe is connected with a water outlet pipe. The water inlet pipe is connected with a water chilling unit water outlet pipe and a heating equipment water outlet pipe which are located outside the liquid cargo tank. The water chilling unit water outlet pipe is provided with a first water outlet valve, and the heating equipment water outlet pipe is provided with a second water outlet valve. The water outlet pipe is connected with a water chilling unit water inlet pipeand a heating equipment water inlet pipe which are located outside the liquid cargo tank. The water chilling unit water inlet pipe is provided with a first water inlet valve, and the heating equipmentwater inlet pipe is provided with a second water inlet valve. The water chilling unit water outlet pipe and the water chilling unit water inlet pipe are connected with a refrigerating unit. The heating equipment water outlet pipe and the heating equipment water inlet pipe are connected with heating equipment. By means of the novel cargo oil temperature control system, the coil pipe is connected with the refrigerating unit which is added outside, there is no need to install independent coolers for each liquid cargo tank, cost is reduced and overhaul is facilitated.

Description

technical field [0001] The invention belongs to the field of ship temperature control, in particular to a novel cargo oil temperature control system and method for chemical tankers. Background technique [0002] The 38800DWT chemical tanker is a class I chemical tanker of naturalized LR. It has 14 Class I compartments for loading Class I chemicals. At the same time, the cargo list of this ship includes the low-boiling product propylene oxide (P.O.). Propylene oxide has special properties (boiling point 34°C), extremely flammable, harmful inhalation / skin contact and swallowing, and may cause cancer, so its safety during transportation needs to be fully considered. The saturated vapor pressure of propylene oxide at 45° can reach 50.35 kPa. In order to reduce the pressure during transportation and ensure the safety during transportation, the cargo oil cooling system was designed for this ship. [0003] In the previous cargo oil cooling system, FRAMO is basically the only one...

Claims

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Application Information

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IPC IPC(8): F25D31/00F25D17/02F25D29/00F24H1/20F24H9/00F24H9/20
CPCF24H1/208F24H9/0015F24H9/2007F25D17/02F25D29/00F25D31/003F25D31/005F25D2400/02
Inventor 朱永龙陈阳张晓玮谷越乔东旭
Owner 南通象屿海洋装备有限责任公司
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