CN201129943Y - Fixed tube sheet warm water circulating gasifier - Google Patents

Abstract

A fixed tube sheet warm water circulation gasifier, the lower part of the cylinder is connected to the lower tube box, and the upper part of the cylinder is connected to the head; in the axial direction of the cylinder, a plurality of baffles are arranged radially from bottom to top, and between the baffles It is fixed by a distance tube; there is a connecting pipe between the upper tube plate and flange of the upper opening of the cylinder and the lower tube plate and flange of the lower opening of the cylinder, there is a liquid material inlet under the side wall of the cylinder, and the upper side wall of the cylinder There is a gaseous material outlet; there is a vertical partition plate in the lower tube box, and there are circulating water inlets and circulating water outlets on both sides of the partition plate on the lower tube box, and there is a circulating water discharge port at the bottom of the down tube box; the top of the head There is a non-condensable gas discharge port. The advantages are: simple structure; ensure uniform water temperature distribution, make the gasification more uniform and sufficient, improve the water side heat transfer coefficient, reduce the water requirement of the equipment, reduce the water consumption per hour, and save water. The tube sheet is the thinnest and the cost is low. It solves the problem that the gasification capacity of a single device is difficult to increase due to the limitation of the waterway of the U-shaped and casing.

Description

Fixed tube sheet warm water circulating gasifier

technical field

The utility model belongs to a gasifier device of a component device of petrochemical equipment, in particular to a fixed tube sheet warm water circulation gasifier.

Background technique

The current tube-and-tube warm water circulation gasifier mostly adopts U-shaped tube structure and casing structure. Years of operating experience have shown that both structures have many inherent shortcomings. 1. When the amount of circulating water required is small and the heat exchange area is large, the equipment is likely to be super high, which brings inconvenience to transportation and operation. The medium resistance in the equipment is too high, which affects the normal use of gasification gas. 2. When the amount of gasification is large, a large number of heat exchange tube bundles are required, and a small amount of non-condensable gas cannot be discharged during hot water circulation, which makes the distribution of hot water entering the heat exchange tubes uneven, resulting in insufficient heat exchange area. Take advantage of.

Contents of the invention

The technical problem to be solved by the utility model is to provide a fixed tube plate warm water circulation gasifier.

The technical scheme of the utility model is:

A fixed tube sheet warm water circulating gasifier, characterized in that: the lower part of the cylinder is connected to the lower tube box, and the upper part of the cylinder is connected to the head; in the axial direction of the cylinder, a plurality of baffles are arranged radially from bottom to top, and the folding The space between the flow plates is fixed by a fixed distance tube; the space of the cylinder is divided into multiple S-shaped channels; the upper opening of the cylinder has an upper tube plate and flange, the lower opening of the cylinder has a lower tube plate and a flange, and the upper tube plate and a flange There is a connecting pipe connecting the inner space of the lower tube box and the inner space of the head between the flange and the lower tube plate and flange. There is a liquid material inlet under the side wall of the cylinder body, and a gaseous material outlet above the side wall of the cylinder body; There is a vertical partition plate, and the lower tube box has a circulating water inlet and a circulating water outlet on both sides of the partition plate, and a circulating water discharge port at the bottom of the down tube box; there is a non-condensable gas discharge port on the top of the head.

There are upper and lower liquid level gauge ports on the side wall of the cylinder, and a liquid level gauge tube is connected between the upper and lower liquid level gauge ports.

There is a gaseous pressure gauge port on the material side and a gaseous outlet thermometer port on the material side on the side wall of the cylinder.

There is a circulating water thermometer port and a circulating water inlet pressure gauge port on the side of the lower tube box.

There is a pull bar connecting the upper and lower distance pipes in the middle of the distance pipe.

A skirt seat is arranged on the lower circumference circle of the lower pipe box.

The utility model structural advantage is:

1. The structure is simple; in the same shell diameter, there are the most pipes, which are relatively compact; in the shell side flow with baffles, the E bypass is the smallest. 2. Solve the problem of non-condensable gas discharge in the waterway, and the top of the heat exchanger is equipped with automatic and manual exhaust valves. It can discharge the non-condensable gas in the waterway, so that the warm water can circulate smoothly in the gasifier, and ensure that the water temperature is evenly distributed, so that the gasification is more uniform and sufficient, and the outlet temperature and gasification capacity of the gasifier are more guaranteed. 3. The water path of the gasifier can be designed to any even number of passes, thereby improving the heat transfer coefficient of the water side and reducing the water requirement of the equipment, thus reducing the water consumption per hour and saving water. 4 Since the tube sheet is supported by the heat exchange tubes, compared with other shell and tube heat exchangers, the tube sheet is the thinnest and the cost is low. 5. Solved the problem that the gasification capacity of a single device is difficult to increase due to the limitation of the waterway of the U-shaped and casing.

Description of drawings

Figure 1 is a schematic diagram of the structure of a fixed tube sheet warm water circulating gasifier

Part name in the picture

1 Lower tube box, 2 Equipment flange, 3 Lower tube plate and flange, 4 Baffle plate, 5 Cylinder, 6 Upper tube plate and flange, 7 Head, 8 Tie rod, 9 Distance tube, 10 Partition plate, 11 skirt seat, 12 connecting pipe,

Nozzle name in the picture

N1 circulating water outlet, N2 liquid material inlet, N3 gaseous material outlet, N4 circulating water inlet, N5 circulating water discharge port, N6 non-condensable gas discharge port, N7 liquid material side sewage outlet, T1 circulating water thermometer port, T2 material Side gaseous outlet thermometer port, P1 circulating water inlet pressure gauge port, P2 material side gaseous pressure gauge port, LaLb liquid level gauge port

Detailed ways

A fixed tube-sheet gasifier, the working principle: circulating warm water enters the heat exchange tube from the N4 port of the lower tube box, and the material enters the equipment shell from the liquid inlet N2, passes through the baffle plate and passes through the tube bundle, and the liquid absorbs heat and vaporizes. Overheating, the gas enters the pipe network from the N3 output. The equipment body is equipped with overpressure relief valve V, on-site display instrument and remote transmitter to realize the safety chain function.

The structure is shown in Figure 1. The fixed tube-sheet gasifier mainly has a skirt to support the whole equipment. The lower pipe box and the skirt are connected by welding. There are multiple partition plates in the lower pipe box. The cylinder is above the lower pipe box. The cylinder body and the lower tube box are connected by flanges, the tube plate and flange at the bottom of the cylinder body are connected with the cylinder body by welding, the cylinder body is made of seamless steel pipe or steel plate, and the top of the cylinder body and the upper tube plate and flange It is welded, the head is the highest point of the equipment, and the head and the cylinder are connected by flanges. The interior of the equipment is composed of seamless steel pipe bundles, baffles, tie rods for fixing the baffles and distance pipes. The seamless steel pipes pass through the upper and lower tube sheets and communicate with the lower pipe box and the head.

Fixed tube sheets The tube sheets at both ends of the warm water circulating gasifier are connected and fixed to the shell by welding. This heat exchanger is a shell and tube heat exchanger that is improved after summarizing the advantages and disadvantages of the U-tube heat exchanger and combining with the actual use. Using the new structure, Olida has designed and put it into operation. At present, the largest warm water circulation gasifier in China is the VWP-10000D type. The gasification capacity of a single gasifier can reach 10T/h, and it is the first domestic company to do so. .

Claims (6)

1. A fixed tube sheet warm water circulation gasifier, characterized in that: the bottom of the cylinder is connected to the lower tube box, and the top of the cylinder is connected to the head; the axial direction of the cylinder is arranged radially from bottom to top with multiple baffles , the baffles are fixed by fixed distance tubes; the space of the cylinder is divided into multiple S-shaped channels; the upper opening of the cylinder has an upper tube plate and flange, the lower opening of the cylinder has a lower tube plate and flange, and the upper tube plate There is a connecting pipe connecting the inner space of the lower tube box and the inner space of the head between the flange and the lower tube plate and the lower flange. There is a liquid material inlet below the side wall of the cylinder, and a gaseous material outlet above the side wall of the cylinder; the lower tube There is a vertical partition in the box, and there are circulating water inlets and outlets on both sides of the partition on the lower tube box, and there is a circulating water discharge port at the bottom of the down tube box; there is a non-condensable gas discharge port on the top of the head . 2. The fixed tube plate warm water circulating gasifier according to claim 1, characterized in that: the side wall of the cylinder has upper and lower liquid level gauge ports, and the liquid level gauge tube is connected between the upper and lower liquid level gauge ports . 3. The fixed tube plate warm water circulation gasifier according to claim 1, characterized in that: there are gaseous pressure gauge ports on the material side and gaseous outlet thermometer ports on the material side on the side wall of the cylinder. 4. The fixed tube plate warm water circulating gasifier according to claim 1, characterized in that there are circulating water thermometer ports and circulating water inlet pressure gauge ports on the side of the lower tube box. 5. The fixed tube plate warm water circulating gasifier according to claim 1, characterized in that there is a tie rod connecting the upper and lower distance tubes in the middle of the spacer tubes. 6. The fixed tube plate warm water circulating gasifier according to claim 1, characterized in that: the lower circumference of the lower tube box is provided with a skirt.

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